—______do you have an art festival in your school?— Once a year.
| A．How long | B．How often |
| C．How far | D．How soon |
---Do you need a helping hand with the job?
---I can_______ it. Thanks anyway.
| A．refuse | B．support | C．encourage | D．manage |
---There’s too much salt in the Chinese diet.
---So there is. The WTO says only 1.5 grams of salt_______ for each man every day.
| A．is needed | B．needs |
| C．will need | D．has needed |
--I saw you came to school by taxi this morning.
--Oh, I_______ come to school by taxi, but it is raining today.
| A．sometimes | B．always | C．hardly | D．usually |
Now one of the hottest topics_______ people are talking about is the safety of food.
| A．that | B．who | C．when | D．which |
---Not only the young but also the old are getting interested _______Wechat.
---They can communicate more freely.
| A．by | B．about | C．in | D．For |