问题

We have a lot of homework______. We are very busy today.
A:to do
B:doing
C:to doing
D:do
B:doing
C:to doing
D:do
正确答案是:
同类题型
I’ve just been to my first language class.— Oh really? ________ . Which language are you studying?
Don’t turn on the TV. Lucy has just come home from work and __________.
When ___you _____ your breakfast this morning? At 6.00.
_____ is known to us all that the 2012 Olympic Games will take place in London.