Choose the best answer: 

There was no one there; _______ I went away.

Choose the best answer: 

He is very fond of music_______ reading.

Khi vật thể hay nhóm vật thể là duy nhất hoặc được xem là duy nhất

There are billions of stars in ______ space.

Choose the best answer: 

Lightning currents ________ the interior of an airplane.

Choose the best answer: 

“Did you paint our house yourself?” “No, I had some friends_______ me”

Choose the best answer: 

I’ll offer it to Tom _______, he may not want it.

Choose the best answer: 

I’d __________ the operation unless it is absolutely necessary.

Choose the best answer: 

I wish I ______ to retake my exams.

Choose the best answer: 

The forest trails_____ any signs for campers.

_____ begin with a few facts.

Choose the best answer: 

I wish my wife_____ better now.

Choose the best answer: 

I put my keys on the table, but now it’s gone. Someone_____ have taken it.

Choose the best answer: 

If it___________ so late we could have coffee.

Choose the best answer: 

They have plenty of time, so they need not_____

Choose the best answer: 

Let you and _______ agree to settle our differences without involving any of the other students.

Choose the best answer: 

Frankly, I’d rather you________ anything about it for the time being.

Choose the best answer: 

He ought not______ him but she did.

Choose the best answer: 

“Did you hear the phone ring last night?”.

          “I didn’t hear anything, I was_____ that I didn’t wake up”.

Choose the best answer: 

After Jessica_____ her agree, she intends to work in her father’s company.

Choose the word (a, b, c, or d) that best fits each of the blank spaces. 
Computers are very (21)____, but they also can (22) _____ problems. One kind of problem is with the computer’s memory. It is not perfect, so (23) ____ computers lose (24)______information. Another problem is with the machinery. Computers are machines, and (25)_____can break down. When computers break down, they may erase information, like chalk on a blackboard. Or they may stop doing anything at all. And there is another different kind of problem with computers. Some doctors say they may be bad for your (26)_____. 

(24)........ 

Choose the best answer: 

I don’t like iced tea, and ______