He has been acting strangely these days. I can’t________ his actions at all.
| A．account for | B．ask for | C．call for | D．stand for |
The pregnant woman is about to give birth to a baby, so we’d better ________ a doctor immediately.
| A．send in | B．send off |
| C．send for | D．send away |
We have been told that under no circumstances _________ the office telephone for personal affairs.
| A．can we use | B．we can use |
| C．we use | D．did we use |
It doesn’t matter how many times you fail ;_________ matters is how many times you stand up and try again．
| A．which | B．that |
| C．who | D．what |
I’m still wondering__________ put the Christmas gift under my pillow．
| A．whom it is that | B．it is whom that |
| C．it is who that | D．who it is that |
Sixty-six Chinese athletes attended the 2014 Winter Olympics，three ________won gold medals．
| A．of whom | B．of them |
| C．among which | D．among them |