He could not guess how they managed ______.
A: A.doing this
B: B.to doing this
C: C.to do this
D: D.to doing this
A: A.doing this
B: B.to doing this
C: C.to do this
D: D.to doing this
举一反三
- With the cooking ______,I went on ______ some sewing. A: A.done;to do B: B.being done;doing C: C.to be done;doing D: D.to have done;doing
- He was busy ____ his homework. A: doing B: to do C: that he was doing D: he was doing
- What ___ he ___with our parents? A: do;doing B: does;doing C: is;doing D: is;do
- Can you imagine _________? A: what his doing B: What is he doing C: what he is doing D: he is doing what
- How about _________ housework? A: doing B: to do C: do