Time should be made good use ______ out lessons well.
| A．of learning | B．to learn | C．to learning | D．of to learn |
Flight BA 123 to Vienna is now boarding at
| A．Gate 21 | B．21St Gate | C．the Gate 21 | D．21 Gate |
He didn’t seem to mind_____________ TV while he was trying to study
| A．them to watch | B．that they watch |
| C．their watching | D．watching |
I don't skate now, but I___________ when I was a kid.
| A．used to | B．am used to it | C．sued | D．used to do |
We liked the oil painting better____________ we looked at it.
| A．as | B．while | C．the | D．the more |
We must keep our room clean. Dirt and disease go , you know.
| A．from time to time | B．hand in hand |
| C．step by step | D．one after another |