_______ his return from America, he got down to his research.
#92169
A
While
B
In
C
As
D
On
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Don't be discouraged．___things as they are and you will enjoy every day of your life．
#92202
A
Taking
B
To take
C
Take
D
Taken
There was nothing they could do______.
#93165
A
but wait
B
except waiting
C
only to wait
D
unless they waited
_____ get a better score, she has been studying hard all day.
#92657
A
So as to
B
In order to
C
So that
D
In order that
_________ whether China’s post-90s generation is strawberry generation.
#92845
A
There is much possibility
B
There is much doubt
C
It is much possibility
D
It is much doubt
To succeed in doing an experiment,________.
#94929
A
carefulness is needed
B
carefulness is one needs
C
one needs to be careful
D
one need be careful