I found________hard to finish the work in such a short time．
| A．that |
| B．it’s |
| C．it |
| D．this |
— ______ do you go to the gym?
— Once a week.
| A．How far | B．How often | C．How long | D．How soon |
Nowadays it’s very useful ______ a foreign language.
| A．learn | B．learned | C．to learn | D．learns |
His English is as ______ as his Chinese.
| A．good | B．better | C．best | D．the best |
— Did you see the film last night?
— No, I ______ some shopping at that time.
| A．am doing | B．was doing | C．did | D．will do |
— Do you want to play another game of cards?
— I’d like to, but it’s getting late. I really ______ go.
| A．would | B．could | C．can | D．must |