__________ it’s very difficult, remember not to give up until the last minute.
| A．Until | B．Unless |
| C．Although | D．Since |
I hear ________ students went to the hall to have the concert.
| A．two hundred | B．two hundreds | C．hundred of | D．two hundred of |
My sister is only four years old, but she can look after ________ now.
| A．she | B．her | C．hers | D．herself |
This term, we have ________ new subject—physics. It’s interesting.
| A．a | B．an | C．the | D．/ |
— Mr. Brown, please teach me how to draw on the computer today.
— Oh, no hurry. _________. You have to get familiar with the keyboard first.
| A．Learn to walk before you run |
| B．It’s never too late to learn. |
| C．Everything comes to him who waits. |
| D．The early bird catches the worm. |
— Could I use your bike for today, Sam?
— _________. I’m not using it.
| A．I have no idea | B．No, you can’t | C．Sure, go ahead | D．Never mind |