Question 26 : The secretary_____until she_____her work.

A. hadn’t left - finish                                 B. don’t leave - had finished

C. didn’t leave - had finished                    D. wasn’t leaving - finished

Question 27 : The teacher asked the boy why he_____his homework.

A. have done            B. did                      C. have been doing   D. hadn’t done

Question 28 : She_____the letter when she_____she_____it to the wrong address.

A. posted - had realized - sent                   B. had posted - realized - had sent

C. was posting - realized - had sent           D. have posted - had realized - had sent

Question 29 : Hardly_____a mile when it had a flat tyre.

A. had the car gone   B. did the car go       C. had the car go      D. do the car go

Question 30 : The weather_____far worse than we_____.

A. is - have expected                                                                B. was - was expected

C. was - have been expecting                   D. was - had expected

Question 16 : I and my mom_____comic at this time last night.

A. read                     B. had been reading  C. have read             D. were reading

Question 17 : At lO.pm last night, my younger brother_____games online.

A. had been playing  B. was playing         C. will be playing     D. have been playing

Question 18 : People_____all trees along the streets at this time two years ago.

A. are planting                                          B. will have been planting

C. were planting                                       D. will be planting

Question 19 : She_____her homework at this time yesterday morning?

A. Was-doing           B. Had - been doing C. Do-do                  D. Will - be doing

Question 20 : They_____dinner when we_____.

A. had - was coming                                 B. had had - came

C. come - will be coming                         D. were having - came

Bài 1: Tìm các cạnh các góc chưa biết của tam giác ABC trong các trường hợp sau

a) Â = 90 độ; 𝐶̂= 53 độ; AB = 16 cm

b) Â = 90 độ; 𝐶̂= 67 độ; AC = 16 cm

c) Â = 90 độ; 𝐶̂= 30 độ; BC = 16 cm