－What trouble do you have when you learn English?－ __________the grammar in a right way.
#49768
A
Use
B
To use
C
Using
D
To using
推荐题目
What bad weather it was! We decided .
#49184
A
not to go out
B
to go out
C
to not go out
D
not going out
---People are not allowed __________in the cinema. ---But they will allow ___________in the restroom.
#50271
A
to smoke; smoke
B
smoking; to smoke
C
to smoke; smoking
D
smoking; smoke