Our boss is very ________，so we have to arrive on time，or we would be fined.

I will meet Jane at the station. Please ________ what time she will arrive.

Environment protection requires our joint effort.______ will be achieved unless we work well together.

I’d like to have a picnic tomorrow.— We’re too busy these days!

I heard your grandpa used to be a teacher. — Yes. He was a Chinese teacher ______.