When Peter speaks in public, he always has trouble        _ the right things to say.
#88592
A
thinking of
B
to think of
C
thought of
D
think of .
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The president said that it was a great honor for him ______ his country in the past two weeks.
#91805
A
to visit
B
to be visiting
C
to have visited
D
to have been visited
No matter how bright a talker you are, there are times when it’s better     silent.
#91718
A
remain
B
to remain
C
having remained
D
to be remained
What upset the child most was _________to play games on the computer before he finished his task. 
#90775
A
his not to be allowed
B
him being not allowed
C
his not being allowed
D
him to be not allowed