Unless________ to speak, you should remain silent at the meeting. 
#94058
A
invited
B
inviting
C
being invited
D
having invited
推荐题目
 Time should be made good use of ____ our lessons well. 
#98053
A
learning
B
learned
C
to learn
D
having learned
This scientist is a man ______ praise.
#97541
A
worth to
B
worthy to be
C
worthy of
D
worth
The murderer was reported ______ by the court for his crime.
#88331
A
putting to death
B
to have been put to death
C
being sentenced to death
D
to have sentenced to death
____ nice,the soup was sold out soon.
#89383
A
Tasted
B
Tasting
C
To taste
D
Being taste