For many online shops, the price of their products can be decreased _______ 30% in the holiday seasons.
| A．to | B．of | C．by | D．on |
You had better take something to read when you go to see the doctor____ you have to wait.
| A．even if | B．as if | C．in order that | D．in case |
You should follow _____ of the medicine, and take three pills every day.
| A．direction | B．explanations | C．instructions | D．methods |
She is accustomed to ____ like that.
| A．be spoken | B．being spoken | C．speak | D．being spoken to |
--- Is there a bus to the downtown?
-----There ____ be, for it is too late now. You’d better take a taxi.
| A．won’t | B．mustn’t | C．can’t | D．needn’t |
By the end of last year another new gymnasium_____ in Beijing
| A．would be completed | B．was being completed |
| C．has been completed | D．had been completed |