Don’t leave your keys in the car. Someone might steal ________ 。
| A．one | B．that |
| C．this | D．it |
Considering his health, I advise him to an hour or two each day to work out．
| A．set about | B．set aside | C．set up | D．set off |
Alice trusts you，only you canher to give up the foolish idea．
| A．suggest | B．attract | C．attempt | D． persuade |
number of visitors came but I don’t knownumber．
| A．A ; the | B．The ; a | C．A ; a | D．The ; the |
He came to my class every week, but his look that he was not really interested．
| A．expresses | B．described | C．explained | D．suggested |
Bears often hide themselves in placescan’t be found by hunters．
| A．in which | B．where | C．that | D．不填 |