____ my pen?—Yes, I ___ it on your desk five minutes ago.

Is your friend looking forward to going on vacation this summer ?—Yes, she’s _______the days .

What do you think of the lecture of Li Yang’s Crazy English?— I think it’s _______ , but someone thinks it’s much too ________.

I like English best. What about _______?–He thinks science is very interesting. His favorite subject is science.

It was not until he came back _____ he knew the police were looking for him.