— Why didn’t she ask for help at that time?— You know, at such a midnight, there was no one ________.
| A．she could turn to | B．for whom to turn | C．who to turn to | D．for her to turn |
In many ways, riding on a bike is simliar to ___.
| A．driving a car | B．when you drive a car | C．drive a car | D．when driving a car |
We did the job as fast as we could, ___ to finish it earlier.
| A．hoping | B．to hope | C．hoped | D．being hoped |
We had better not __ them busy all day long.
| A．to keep | B．keeping | C．kept | D．keep |
The girl is dangerous ___.
| A．to make friends | B．make friends with | C．to make friend with | D．to make friends with |
---Why was Mary so upset? ---She isn't used ___ criticized.
| A．be | B．to be | C．to being | D．being |