Bài tập trắc nghiệm Unit 9 - Ngữ pháp có đáp án

Choose the best answer. 

________ long it takes, I will wait for you. 

Choose the best answer. 

___ hard he worked, he couldn’t earn enough money to support his family.

Choose the best answer. 

Everyone ________ Tom is ready for the discussion. 

Choose the best answer. 

The first part of the test was easy; the second, ________, took hours.

Choose the best answer. 

He has done nothing to prepare for the final examination, ______ played.