When I was in primary school, I had trouble ______complete sentences.
| A．to make | B．made | C．making | D．make |
It’s very convenient ______ us to buy train tickets now because we can buy them either from the station or on the Internet.
| A．to | B．of | C．by | D．for |
— Alice, I can’t find my bike.
— Don’t worry. I saw ______ black one under the tree. Is it yours?
| A．a | B．an | C．the | D．不填 |
--- My math teacher said I was too lazy.
--- ______________. You should work harder.
| A．Good idea | B．I’m sorry | C．Good luck | D．Have a great time |
--- ______________?
--- I don’t have enough money to buy that nice skirt.
| A．How’s it going? | B．How are you? |
| C．What’s it like? | D．What’s the problem? |
--- Do you think people will have ________ work to do in the future?
--- I think so. And I think they will have _______ chances to travel.
| A．fewer, more | B．little, many | C．more, less | D．less, more |