I could see a whale ________ by a pack of about six other killers.
| A．having been attacked | B．being attacked |
| C．to be attacked | D．be attacked |
_________________, she can help her mother do lots of housework.
| A．As my sister is a child |
| B．Child as is my sister |
| C．A child as my sister is |
| D．Child as my sister is |
Along the Three Gorges, there are some small towns, _________ the climate is mild and the soil is fertile.
| A．where | B．which | C．that | D．whose |
Nearly 100 experts attended the meeting, most of them________ China.
| A．came from | B．come from |
| C．coming from | D．had come from |
To everyone’s surprise, Tom claimed _______ all his work two days ago.
| A．to finish | B．to have finished |
| C．finishing | D．having finished |
We were really worried about you, you________ home without saying a word.
| A．shouldn’t have left | B．shouldn’t leave |
| C．mustn’t have left | D．couldn’t leave |