Give the corrcet verb form
1. She usually ( go ) .............. to the market in the morning . Look ! She .........................(buy) some meat over there
2. Your mother ( watch) ....................TV now?_No, she ..............................(cook) in the kitchen
3. I (have) ........................ a day off tomorrow . So , I'm free tomorrow
4. - Tell me your plan , Lan . What you ( do) ............................. this Saturday evening?
- I ( visit ) ........................ my grandparents
5. Whare you ( be ) ............................last night? _ I (be) .................. at home and (watch ) ..................TV
6. What the weather (be).......................like yesterday ? _ It ( be ) ...................very hot
7. My father (can) .......................... play football when he ( be )..................15 years old
8. I ( not / enjoy ) ............................. the party last night because it ( be) .................... boring
9. Where she (go) ............... last summer holiday?
10. It( take )........................me two hours to do my homework yesterday
11. .................. your father (buy) .................. you this dictionary 3 days ago?
12. We (not/go).................................camping last Sunday because it ( rain) ..................... heavily
13. Many people (become) ................. homeless after the earthquake in Haiti a few months ago
14. He ( get) ................home late last night so he ( miss ).........(see)..............the new on TV
15. He usually (write ) .................................home when he ( be ) .................... in the army
16. Where you ( go) ..................... for your last summer holiday ?
17. What you ( buy ) ........................ at the grocery yesterday ?
18. What (make) ...............him ( change)...................his mind during the meeting yesterday ?
19. My firend (gather) .................... in the garden for a party last night , they (sing) ........................ and (dance ) ..................... beautifully
20. I ( phone ) ................ you last night , but you (not/ answer )............... the phone
a) \(\left(\sqrt{12}-3\sqrt{75}\right).\sqrt{3}=\left(2\sqrt{3}-15\sqrt{3}\right).\sqrt{3}=-13\sqrt{3}.\sqrt{3}=-39\)
b) \(\left(\sqrt{18}-4\sqrt{72}\right).2\sqrt{2}=\left(3\sqrt{2}-24\sqrt{2}\right).2\sqrt{2}=-21\sqrt{2}.2\sqrt{2}=-84\)
c) \(\left(\sqrt{6}-2\right)\left(\sqrt{6}+7\right)=6+7\sqrt{6}-2\sqrt{6}-14=5\sqrt{6}-8\)
d) \(\left(\sqrt{3}+2\right)\left(\sqrt{3}-5\right)=3-5\sqrt{3}+2\sqrt{3}-10=-7-3\sqrt{3}\)