________they visited the Science Museum，they showed great interest in everything they saw.
#30703
A
The first time
B
For the first time
C
At first
D
At the first time
推荐题目
Most probably it will be another 6 hours _____ you can have next meal, so each of you must have your stomach full.
#31309
A
since
B
when
C
after
D
before
He _______ his gun under the tree where he was __________.
#32988
A
lay; laying
B
laid; lying
C
lied; laying
D
lay; lying
a bad habit is formed, it will take a long time to get rid of it．
#32445
A
Ever since
B
While
C
Once
D
Even if
“Every time you eat a sweet, drink green tea.” This is _____ my mother used to tell me.
#29999
A
what
B
how
C
that
D
whether