He has spent as much time as he has _______ English in the morning.
Mom, could you buy me a new jacket? This one can’t ________ the cold.
If you don’t know ________ the new robot toy, you’d better read the instructions first.
---________ will your head teacher return from the USA?---In two days.
Everyone has his own dreams, but not all the dreams can always _________.
--Tom, do you know there _________ a sports meeting next Thursday? --Sorry, I forgot to tell you.