I think _________ history about China is very important.
#49097
A
study
B
studying
C
studied
D
studies
推荐题目
When we practice speaking English, we often end up _______ in Chinese.
#50338
A
to speak
B
speaking
C
spoken
D
speak
Although we’ve learned English for years, we have trouble _____ the foreigners.
#50181
A
understand
B
to understand
C
understanding
D
of understanding
