When the personnel director realized________, he immediately added two more staff to the project.

A. what it was a formidable task

B. what a formidable task it was

C. it was what a formidable task

D. how formidable was it a task

Cho các chất: glucozơ, saccarozơ, xenlulozơ, fructozơ, tinh bột. Số chất có tham gia phản ứng tráng bạc là

A. 4.

B. 3.

C. 2.

D. 5. 

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

He didn’t hurry. Therefore, he missed the plane

A. Had he hurried, he could have caught the plane.

B. Had he hurried, he might catch the plane.

C. If he hurried, he wouldn’t miss the plane.

D. He didn’t miss the plane because he hurried.