He didn't go to the park with us _________he was very busy.
A. when
B. while
C. if
D. because
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He'll never succeed,________hard he tries.
A. whatever
B. despite
C. thought
D. however
I passed his office several times_________I could make up my mind to ring the door bell.
A. then
B. until
C. before
D. but
I got up early this morning so that I can reach the classroom at 8.
A. 对
B. 错
When there is a will, there is a way.
A. 对
B. 错