______ is well known to everyone, I should say, is that a man becomes learned by asking questions.
A．Who B．It C．As D．What
I have no _______ to the plan, so long as it would not cost too much.
A．objection B．comment C．idea D．refusal
–I find Chinese people are helpful when traveling around China.
–You’re right. I like ______ when people are friendly and helpful.
A．that B．it C．one D．them
As high school students, it’s very important to keep ourselves ______ of what’s happening home and abroad every day.
A．to inform B．informing C．informed D．be informed
---Why do you look so upset?
---There are so many troublesome problems _____.
A．remaining to be settled B．remained settled
C．remaining to settle D．remained to be settled
— Alice told me you called yesterday.
— Yes, I had a problem with Jane, ___________I thought you could help me with, but you were not in.
A．who B．whom C．that D．which
