Because of the financial crisis，days are gone ________ local 5－star hotels charged 6,000 yuan for one night.
| A．if | B．when | C．which | D．since |
Don't stop ________ you meet with a word you don't understand.
| A．at the time | B．each time |
| C．by the time | D．Sometimes |
I would appreciateif you can keep an eye on my dog while I am away.
| A．you | B．that | C．不填 | D．it |
The boy failed four times, but he said he would try ___________.
| A．a five time | B．a fifth time |
| C．the five time | D．the fifth time |
The band ________ in about 1970, but happily they reunited in the mid-1980s.
| A．broke up | B．broke in |
| C．broke out | D．broke down |
— Dad, would you please buy some strawberries for me? I love them.
— I'd like to, but they are not _____ in winter.
| A．accustomed | B．convenient |
| C．casual | D．Available |