问题
选择题
Sometimes he found _______very hard to fall asleep at night, so he went to see the doctor.
A.him
B.this
C.that
D.it
答案
答案:D
考查it做形式宾语,find it+adj+to do,to do是真正的宾语,it是形式宾语,句意:有时,他发现晚上很难入睡,因此去看医生。选D。