--Tom,you didn't come to the party last night?
----I _____,but I suddenly remembered I had homework to do.
A,had to B, didn't C,was going to D, wouldn't
.They arrived at a farmhouse, in front of which _____of no more than 10 years old.
A,sat a boy B，a boy sat C,did a boy sit D,a boy did sit
The eastern part of the country is much more developed ____the western part is poorer.
A.which B,that C,while D,as
The drivers on the highway have to stop because the thick fog makes ____difficult to see.
A,them B,it C,that D,this
.He does nothing but ____all the time . How can he do his work well?
A,to have complained B, complains C,complain D,complaining
.Judging from the number of cars, there are not ____people as we expected at the party.
A,many more B,as many C,much more D,as much
