You never know how much difficulty we had ______the problem. Luckily, we managed to solve it with Mrs Wu’s help.
| A．working out | B．work out |
| C．worked out | D．to work out |
The high-speed trains are much than the common ones.
A. fast B. faster C. fastest
Linda has two Chinese friends. often talk in Chinese.
A. Their B. Them C. They
There isn’t any ______in the fridge. We need to go shopping
A. oranges B. milk C. eggs
—What ________exciting sports show!
—Yeah, I love this game.
A. a B. the C. an
—I’m sorry for being late, Miss Green.
—___________.
| A．That's right | B．You are welcome | C．It doesn't matter | D．You should be sorry |