57. ---These boxes are too heavy for me to move.
---Don’t worry; I’ll give you a hand ______ them.
| A．for | B．to | C．with | D．On |
The elephant and the monkey went to the river, but the water was ____ and the monkey was afraid.
| A．swift |
| B．clear |
| C．fine |
| D．hard |
______ regular exercise is very important,it's never a good idea to exercise tooclose to bedtime.(2011 .天津)
| A．It |
| B．As |
| C．Although |
| D．Unless |
Whatever is left over may be put intothe refrigerator,______ it will keep for two or three weeks.(2011 .安徽)
| A．when |
| B．which |
| C．where |
| D．while |
My schedule is very _____ right now, but I'II try to fit you in.(2011.浙江)
| A．tight |
| B．short |
| C．regular |
| D．flexible |
By 16: 30, _____ was almostclosing time, nearly all the paintings had been sold.(2012.江西)
| A．which |
| B．when |
| C．what |
| D．that |