Câu hỏi: How much times did Rich and Jennifer have to do the experiment?

A. much

B. did

C. have to

D. experiment

Câu 1: When precipitation occurs, some of it evaporates, some runs off the surface it strikes, and some sinking into the ground.

A. When

B. it

C. runs off

D. sinking

Câu 2: He has made a lot of mistakes in his writing because his carelessness.

A. made

B. mistakes

C. in

D. because

Câu 3: Looking from afar, the village resembles a small green spot dotted with tiny fireballs.

A. Looking

B. the village

C. dotted

D. fireballs

Câu 4: There is a severe famine in Somalia, and thousands of people are dying from hunger.

A. There is

B. thousands of people

C. are dying

D. from hunger

Câu 5: Some people often say that using cars is not as convenient than using motorbikes.

A. some

B. say

C. than

D. is

Câu 6: It was not until the end of prehistoric times that the first wheeled vehicles appearing

A. It was

B. prehistoric

C. wheeled vehicles

D. appearing