问题

He looks upset. He doesn’t know ________.
A:make
B:making
C:to make
D:makes;
B:making
C:to make
D:makes;
正确答案是:
同类题型
He ________ an interest in drawing when he was only a child and now he is a famous artist.
The city ____ by an army of 600 men was difficult to take [ ]
Smell the flowers before you go to sleep, and you may just ________ sweet dreams.
He told us the result;but_____a lot of details.[ ]
______the telephone number several times,but he couldn’t learn it by heart.