问题

What are you doing? —— I _____ a letter to my pen pal.
A:write
B:am writing
C:writes
D:am write
B:am writing
C:writes
D:am write
正确答案是:
同类题型
There aren’t enough chairs. Would you please _________ ones here?
It’s hard to believe that John easilyAdam in the last game.
The monkeys escaped ______ the zoo yesterday evening. [ ]
What do you think of Mrs. Smith?—She is ______ as you could ever meet.
If you don’t know how to spell the new word, please ________ in the dictionary.