They enjoyed fresh watermelon last fall because they______ watermelon seeds in the spring.
| A．were planting | B．would plant | C．have planted | D．had planted |
I haven’t found my watch yet;in fact,I’m not sure____I could haved one with it.
| A．where | B．whether | C．what | D．how |
I was advised to arrange for insurance____I needed medical treatment.
| A．nevertheless | B．although | C．in case | D．so that |
They were surprised that a four-year-old boy should work out such a difficult problem
____they themselves couldn’t.
| A．once | B．then | C．while | D．if |
I think you ought to end it____it is too late,or you’l lkill yourself.
| A．even if | B．before | C．so that | D．once |
The girl go herself into a serious situation____she was likely to lose control over the
motorbike.
| A．where | B．which | C．while | D．why |