—You look unhappy， my son?—I’m wondering how long it’ll be we come to China again.
#92681
A
since
B
when
C
before
D
after
推荐题目
It’s good manners _______ .
#93789
A
for Chinese people to open the present as soon as he/she receives it.
B
for both Chinese and British people to open the presents the moment they receive them.
C
for both American and British people to open the presents when they get back home.
D
for both American and British people to open the presents immediately they receive them.
Come and see me whenever _______.
#93182
A
you are convenient
B
you will be convenient
C
it is convenient to you
D
it will be convenient to you
It is careless _______ such a mistake.
#92884
A
of you to make
B
of your making
C
for you to make
D
for your making
---Tom has been fired by his boss． --- ? As far as I know, he is a hardworking and considerate fellow．
#93066
A
Why not
B
How come
C
What then
D
So what