—How could you________ my mother so easily in the crowd?
—Because she stood out in her red dress.
| A．pick up | B．pick out | C．take up | D．take out |
What an important role the Internet _____ in our life! One can hardly imagine ____ life would be like without it.
| A．plays, how | B．is, however | C．uses, what | D．plays, what |
He looked at the envelope(信封) and _____ Jenny’s handwriting immediately.
| A．realized | B．recognized | C．reminded | D．remembered |
American English has changed _______ the centuries. There are several reasons _____ this.
| A．over, for | B．for, with | C．in, of | D．during, about |
The little boy fell asleep while ______TV. So his mother sent him to bed at once.
| A．watched | B．to watch | C．was watching | D．watching |
---Look! The telephone is broken. Someone damaged it ________ purpose.
---That may be right. But perhaps it was broken _________ accident.
| A．on; by | B．by; by | C．on; on | D．by; on |