A man does not know the difficulty of anything __________ he does it personally.
| A．although |
| B．if |
| C．because |
| D．unless |
---Mrs．Stanley looks charming tonight．
---The dark dress _________her hidden beauty．
| A．brings out | B．crosses off | C．gives back | D．leaves over |
．If you send the best wishes to your wife on her birthday, _______will give her a great surprise．
| A．which I think | B．I think which | C．I think that | D．what I think |
．In the USA, one needs to make a(n) _________before seeing a doctor．
| A．choice | B．appointment | C．impression | D．excuse |
Jack is late again．It is _________of him to keep others waiting．
| A．normal | B．ordinary | C．common | D．typical |
---Where did you find the package?
---It was on the beach_________we were taking a walk．
| A．where | B．that | C．when | D．which |