---Do you have any good suggestions for our company? ---In my opinion, you should _________ the cost and increase the output.

I can’t be sure that we will win but I ____ that our team will play hard to win the championship.

After her time in hospital, Jenny's parents are afraid she has _____ in her lessons.

A good teacher should encourage his students to ____ the knowledge by themselves instead of just copying and memorizing what the teacher said in class.

I’m not going to help you steal a can, what do you ______?