He ________ more than 5,000 English words when he entered the university at the age of 15.
| A．has learned | B．would have learned | C．learned | D．had learned |
Her eyes were so sharpto __________her boyfriend in thecrowded street.
| A．find | B．find out | C．pick out | D．observe |
—Can I help you? Are you looking for anything in particular today?
—__________. We're just looking.
| A．Yes, please |
| B．No, thank you |
| C．Yes, you can |
| D．No, you needn't |
— Her's your change. —__________
| A．Thank you. |
| B．Don't mention it. |
| C．No problem. |
| D．With pleasure. |
I wrote him a letter to show my __________ of his thoughtfulness.
| A．achievement | B．agreement | C．attention | D．appreciation |
I walked up to the top of the hill with my friends，__________we enjoyed asplendid view of the lake.
| A．which | B．where | C．who | D．that |