Don't __________ making mistakes. They are a naturalpart of learning.
| A．worries | B．worry about | C．be worried | D．be worried that |
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 |
If human beings had been a bit less greedy and cruel, more birds and animals dying out.
| A．ought to avoid | B．could have been avoided |
| C．should have avoided | D．might have avoided |
During the ten-day vacation, they traveled to France their own expense
| A．on | B．with | C．at | D．in |