Can you catch what I said？
Sorry，I can understand it because you speak very quickly．（ ）
A．almostB．probablyC．mostlyD．hardly
Tom is always ready to help others．
________． He often helps me with my English．（ ）
| A． |
So he is |
B． |
So he does |
C． |
So is he |
D． |
So does he |
John________ us when he is free．（ ）
| A． |
joins |
B． |
join |
C． |
will join |
D． |
joined |
It's rather cold here． You'd better ________ your coat．（ ）
| A． |
put away |
B． |
not put on |
| C． |
not take off |
D． |
take off |
I'm afraid we can't work out the math problem________the teacher helps us．
That's true． It's too difficult．（ ）
| A． |
if |
B． |
unless |
C． |
because |
D． |
as soon as |
May I use your computer？
________． I'm working on it．（ ）
| A． |
Glad to hear that |
B． |
It doesn't matter |
| C． |
That's all right |
D． |
I'm sorry |