Yesterday I lost my pencil sharpener. I couldn’t find_______.—Oh, it’s a pity. You’d better buy ________ this afternoon.
Could you tell me_________?—He is in the library.
The flight to Guangzhou had to be________because of the heavy snow.
一Are you going to Guilin by plane?一It’s fast but expensive, so I’m not sure.I ________ take a train.
The teacher spoke loudly _________ make the students hear him clearly.