Tim is weak in math, so he is trying _________ up with other students now.
#59587
A
to catch
B
catch
C
catching
D
caught
推荐题目
—I have a birthday party this evening. Are you free? —Yes, I am.
#56067
A
Are...busy
B
Do...have time
C
Are...great
D
Do...have homework
---Could you tell me when Mr. Li _______ in Changchun? ---Sure. When he _______, I’ll call you.
#60181
A
arrives; will arrive
B
will arrive; arrives
C
arrives; arrives
D
will arrive; will arrive
My friend __________ English than me, so she often helps me with my projects. 
#61796
A
does better on
B
is good for
C
is best at
D
does better in