Is your WeChat account （账户） safe？
Yes， even my father can't use it __________ I tell him the password．（ ）
A．whenB．unlessC．whileD．if
﹣﹣﹣This math problem _______ in half an hour.
﹣﹣﹣Don't worry.Mr.Wang is good at math.He can make it.（ ）
| A． |
is working ou |
B． |
would work out |
| C． |
should be worked out |
D． |
has worked out |
﹣﹣﹣______ nice weather it is to go hiking!Would you like to go with me？
﹣﹣﹣Good idea!Let's go.（ ）
| A． |
How a |
B． |
How |
C． |
What a |
D． |
What |
﹣﹣﹣The policewoman ________ the driver for breaking the traffic rules.
﹣﹣﹣That's right.He's explaining to her loudly over there.（ ）
| A． |
is punishing |
B． |
was punishing |
| C． |
would punish |
D． |
is punished |
﹣﹣﹣Jim，please help me _______ the tent.
﹣﹣﹣OK.I'm coming.It's exciting to sleep in it tonight.（ ）
| A． |
get on |
B． |
get off |
C． |
pull down |
D． |
put up |
﹣﹣﹣Why are you in such a hurry？
﹣﹣﹣Because the class ______ for 10 minutes.（ ）
| A． |
has been on |
B． |
has begun |
| C． |
is on |
D． |
begins |