________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
To improve the quality of our products, we asked for suggestions had used the products.
#31325
A
whoever
B
who
C
whichever
D
which
So, ________ the government has a good system of control or can educate the people, the forests will slowly disappear.
#33394
A
as long as
B
when
C
unless
D
every time
—What should we pay more attention to if we go north in winter, Mum?—Nothing much. Take warm clothes ______ the weather is cold.
#80658
A
as long as
B
now that
C
if
D
in case
_____ Mr Smith is well again, he can go on with his work.
#31397
A
Now just
B
Now and then
C
The other day
D
Now that
All the books I have are here. You may borrow you like.
#33520
A
whatever
B
whichever
C
whenever
D
however