In the next 30 years, we could see more heat waves like_____ now occurring in the US or the kind that swept across Europe in 2003 that caused tens of thousands of deaths.
Mr. Smith likes traveling _______; but his wife enjoys _______.
---Would you mind if I _______ here? --- _______ . It’s not allowed.
All the students in our class made _______ progress by studying harder this term.
---Don’t put the waste on the ground. ---Oh, I’m very sorry. I ________ the dustbin there.
It was at the school gate ______ I met an old friend of mine after class.