is difficult for us to to work out the maths problem in five minutes.

5. – Sorry, Tommy. I’ve lost your pen.– ________ I’ve got another one.

“_______ more time, we will be able to do the task much better,” John said to his manager.

It was the hard work and determination of the generation _____ had changed the opinion of people towards Chinese.

Hi, somebody ______ the window, pleaseIt’s too cold in here