His words remind me________ we did together in the past.
| A．that | B．of what | C．what | D．of that |
I will pay you a visit next month.
| A．call at | B．call on | C．call up | D．call back |
The enemy suddenly appeared.
| A．went in | B．left | C．showed out | D．came in sight |
The little boy can draw a picture on his own.
| A．himself | B．by himself | C．of himself | D．lonely |
The children in poor areas can’t afford their education. We should think ________ to help them.
| A．what can we do | B．what we can do |
| C．how can we do | D．how we can do |
I really enjoyed your speech, ______ there were some parts I didn’t quite understand.
| A．because | B．since | C．until | D．though |