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 prefer             at home rather than             to the cinema. 
#61700
A
to stay, to go
B
stay, go
C
to stay, go
D
stay, to go
The old people enjoy______ up early, but the young people______.
#60456
A
get; don’t
B
getting; don’t
C
gets; doesn’t
D
to get.; don’t