---What are you doing at the moment? ---
题型:选择题
问题:
---What are you doing at the moment?
---I am ______ my turn to borrow books.
A.waiting
B.staying
C.waiting for
D.keeping
---What are you doing at the moment?
---I am ______ my turn to borrow books.
A.waiting
B.staying
C.waiting for
D.keeping