—Jim, who taught ________Chinese before you came to school?—Nobody. I learned it by _______.
—Did you have nice holiday? —Yes,it was best holiday I,ve ever had.
There are some trees on one side of the road and some factories on _____.
all the students in his class,Xiao Ming writes.
Idon’t know when Tom ______. But I will tell you when he ______.
Don,t do anything .You should be.