The doctors and nurses managed_____the lives of patients， though they didn't have enough medicine．（ ）
A．saveB．savingC．to saveD．to saving
You'd better tidy up your room ____ your father comes back．（ ）
| A． |
so |
B． |
or |
C． |
before |
D． |
but |
I was busy this morning and didn't have time to __________ my email．（ ）
| A． |
waste |
B． |
punish |
C． |
believe |
D． |
check |
I ________ be late， so don't wait for me to start the meeting．（ ）
| A． |
mustn't |
B． |
needn't |
C． |
need |
D． |
may |
Because people can find information on the Internet， knowledge spreads __________．（ ）
| A． |
quickly |
B． |
loudly |
C． |
hardly |
D． |
nearly |
In China， we use red paper for hongbao because red means good luck．
That's interesting! I want to know all the Chinese ____________．（ ）
| A． |
traditions |
B． |
sentences |
C． |
notices |
D． |
problems |