---It’s reported that self-driving cars are expected to change the way we move around.
---That sounds__________.
A. bad B. badly C. great D. greatly
The manager of the hotel was waiting at the gate _______ the guests arrived.
A. while B. when C. unless D. after
Liu Changjian, the command pilot of Sichuan Airlines Flight 3U8633, successfully down the plane last month.
A. has brought B. ill bring C. brought D. bring
The local guide spoke ______she could to make the visitors understand her.
A. as clear as B. as clearly as C. so clear as D. so clearly as
--I saw John in the park this morning..
--It _____be him. He has gone to HongKong.
A. can’t B. can C. mustn’t D. must
---_____do you visit your grandparents, Timmy?
---Once a week.
A. How many B. How long C. How much D. How often
