It was in the school __________ he had studied ___________ he began the important experiment.
| A．that; where | B．in which; which |
| C．where; that | D．where; in which |
Find ways to praise your children often，____you’ll find they will open their hearts to you．
| A．till | B．or | C．and | D．but |
---I’m sorry I broke the vase．
---0h．______．It wasn’t very expensive．
| A．you’d better not | B．I’m afraid not |
| C．as you wish | D．that’s all right |
Take your time—it’s just ______ short distance from here to ___ restaurant．
| A．不填；the | B．a；the | C．the；a | D．不填；a |
animal
| A．achieve | B．anything | C．advance | D．anxious |
center
| A．ocean | B．decide | C．cause | D．socialist |