The boy did his homework with the help of his fatherin the past. But now he can do it alone.

rry I didn’t phone you, but I’ve been verybusy____ the past couple weeks.

You never imagine what trouble I have had______ your house．Ittook me nearly 2 hours．

My sister doesn’t like fiuit, but I _ .

nt to the“Bird’s Nest”last month, didn’t you——Yes. That was the second time I ________ to Beijing National Stadium.