Generally speaking， ______ according to the directions，the drug has no side effect．
| A．when taking | B．when taken | C．when to take | D．when to be taker |
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 |
Why don't you get your friend __ it to you.
| A．to explain | B．explain | C．explaining v | D．explained |