Mary is so wet. She _______ in the rain.
| A．must be caught | B．must have been caught |
| C．should have been caught | D．can have been caught |
Sometimes, ________ we show our gratitude for a person is reflected in the kind of food we serve him or her.
| A．when | B．whether | C．why | D．how |
________they decide which college to go to，students should research the admission procedures.
| A．As | B．While | C．Until | D．Once |
—Could I use your car tomorrow morning?
—Sure. I a report at home.
| A．will be writing | B．will have written |
| C．have written | D．have been writing |
He_____ articles for our wall-newspaper these years, and he____ about thirty articles.
| A．has written; wrote | B．has been writing; wrote |
| C．is writing; has been writing | D．has been writing; has written |
The accident caused some______ to my car, but it’s nothing serious.
| A．harm | B．injury | C．ruin | D．damage |