He met many problems------ he was going over his lessons.
#57608
A
before
B
as soon as
C
since
D
while
推荐题目
—What is Mom cooking in the kitchen? —Chicken, I guess. How nice it !
#55567
A
looks
B
smells
C
tastes
D
sounds
He met many problems------ he was going over his lessons.
—What is Mom cooking in the kitchen? —Chicken, I guess. How nice it !