问题补充:
He met many problems he was going over his lessons.
A. before
B. as soon as
C. since
D. while
答案:
A. before
B. as soon as
C. since
(答案→)D. while
解析:可联系答.案.网客服索取。
时间:2022-03-09 16:45:52
He met many problems he was going over his lessons.
A. before
B. as soon as
C. since
D. while
A. before
B. as soon as
C. since
(答案→)D. while
解析:可联系答.案.网客服索取。