—What do you think of Tom? —He has been working very hard. ______ he is an advanced worker. 
#93431
A
No wonder
B
No doubt
C
No worry
D
No problem
推荐题目
I used to go camping a lot, so it isn’t the first time I ____in a tent.
#92699
A
have slept
B
had slept
C
was sleeping
D
slept
Here _____. This is our classroom.
#94132
A
are we
B
we are
C
you are
D
are you