The workers are pouring _____ steel into the model.
#98274
A
melting
B
melted
C
melt
D
being melted
推荐题目
I would like _____you to my birthday party,but I was busy and forgot to call you.
#97834
A
to invite
B
inviting
C
to have invited
D
having invited
—What’s made you so upset? —            with my best friend.
#97042
A
Quarrel
B
Quarrelling
C
Because of quarrelling
D
Since I quarreled
We’re advised not to leave the water ______ after using it.
#88702
A
run
B
running
C
to run
D
having run