Rio de Janeiro still has a lot of things _____ to prepare for the 2016 Olympics.
A. do B. did C. to do D. does
If you find free WiFi in public places, you _____ a password.
A. needn’t B. don’t need to
C. needn’t D. don’t need
People should _____ into the habit of garbage sorting(垃圾分类) in neighborhood.
A. get B. give C. go D. grow
Mother encouraged the little Tom _____ his special experience in the blog.
A. share B. to share
C. shared D. gain
People _____ to set off firecrackers in some areas of Shanghai for several months.
A. aren’t allowed B. weren’t allowed
C. won’t be allowed D. haven’t been allowed
Scientists warn that El Niño _____ the world this coming summer.
A. damaged B. had damaged
C. was damaging D. will damage
