Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.

Câu hỏi

They managed _ over the wall without _.

A. to climb - seeing

B. climbing - being seen

C. to climb - being seen

D. to be climbed – seeing

Đáp án
B. climbing - being seen

Câu hỏi thuộc Bài tập:

They managed _____________ over the wall without _____________.