--- Where is Jack? I can’t find him anywhere.
--- He ______ his homework upstairs.
| A．might have done | B．must have done | C．might be doing | D．must do |
—I feel so nervous about the coming college entrance examination.
—________. You have been studying very hard.
| A．It’s up to you | B．Take it easy |
| C．You got it | D．I couldn’t agree more |
Our teacher requested all of us _________ late for class.
| A．were not | B．could not be |
| C．might not be | D．not be |
We ____________ here on time. But the traffic was so heavy.
| A．can have come | B．must have come |
| C．should have come | D．need have come |
The Internet was flooded with a game called the Ice Bucket Challenge(冰桶挑战), ________ raise people’s awareness of a disease named ALS.
| A．aims to | B．aiming to |
| C．aim to | D．aimed to |
Life is a race ________ people gain growth and experience through cooperation and competition.
| A．on which | B．from which |
| C．during which | D．in which |