The front door ________ open．I'll have it repaired．
| A．mustn't | B．shouldn't | C．may not | D．won't |
_______ you’ve got a chance, you might as well make full use of it.
| A．Even though | B．In case | C． Now that | D．Only if |
He devoted himself ________ to his research work, having no time to play.
| A．exactly | B．gratefully | C． loosely | D．entirely |
The girl looked at me with a ________expression at the ______ computer program.
| A．puzzled , puzzling | B．puzzling, puzzled |
| C．puzzling , puzzling. | D．puzzled , puzzled |
The factory used 65 percent of the raw materials, the rest of which ________ saved for other purposes.
| A．is | B．are | C．was | D．were |
---How could you _______ my sister so easily in the crowd ?
---Because she stood out in a red dress.
| A．pick out | B．pick up | C．take up | D．take out |