--- I hear Sam has gone to Qingdao for his holiday.--- Oh, how nice! Do you know when he ?
-I can’t decide______.– You mean the red one or the blue one?
Robots in the future will be ______ in people’s homes.
Jack ran ______ to catch up with other students.
Please give him ____ to eat.
We are looking forward to ____ my grandparents soon.