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DM
1 tháng 4 2016
1. I prefer English class to Math class.
2. I prefer playing drums to playing piano.
3. I prefer online travel agencies to regular travel agencies.
4. I prefer summers to winters.
5. Kim prefer cats to dogs.
Write one more sentence : I prefer going out to staying at home.
4 tháng 3 2016
5) she hasn't kissed me for 5 month
6) we haven't met each other for a long time
7) how long have you had it?
8) I haven't had a delicious meal like that
4 tháng 3 2016
5. she hasn't kissed me for 5 year
6.we haven't met for a long time
7.
8.i haven't had such a delicious meal before.
PT
20 tháng 4 2016
đáp án của mk là:
1.Lan’s hair is long.->Lan has long hair.
2.Nam ride his bike to school everyday->Nam goes to school by bike everyday.
3.Are there four people in your family?->Does your family has four people?
4.Nobody in my class is happier than Nga->Nga is the happiest in our class.
5.Let us go swimming->what about going swimming?
chúc bn hok tốt
HN
20 tháng 4 2016
1.Lan’s hair is long.
\(\Rightarrow\) Lan has long hair.
2. Nam ride his bike to school everyday.
\(\Rightarrow\) Nam goes to school by bike.
3. Are there four people in your family?
\(\Rightarrow\) Does your family has four people?
4. Nobody in my class is happier than Nga.
\(\Rightarrow\) Nga is the happiest in my class.
5. Let us go swimming.
\(\Rightarrow\) What about going swimming?
CD
11 tháng 4 2016
1. We (wait) for her for 30 minutes.
=>We have been waiting for her for 30 minutes
2. She (go) out since 5 a.m.
=>She has been going out since 5 a.m
3. They (not eat) anything all the morning.
=>They haven't been eating anything all the morning
4. The street is full of water because it (rain) for 3 hours.
=>The street is full of water because it has been raining for 3 hours
5. She looks very exhausted because she (work) all night.
=>She looks very exhausted because she has working all night
6. I (read) this book since last night.
=>I have been reading this book since last night
7. She (chat) with her friend all the day.
=>She has been chating with her friend all the day
8. He (talk) on the phone for hours.
=>He has been talking on the phone for hours
9. She (cycle) for 2 hours and she is very tired now.
=>She has been cycling for 2 hours and she is very tired now
GOOD LUCK!!!!!!!!!!
Ta có: C= \(\frac{3^{99}}{3^{100}}\)+\(\frac{3^{98}}{3^{100}}\)+...+\(\frac{1}{3^{100}}\)
=\(\frac{3^{99}+3^{98}+...+3+1}{3^{100}}\)
=\(\frac{1+3+3^2+...+3^{99}}{3^{100}}\)
=\(\frac{3^{100}-1}{3^{100}}\)
=1
ủa?
hình như đây là toán mà?