My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable

When in trouble，remember to stay calm，and everything will well

The scientist’s last words _________us thatwe should protect the environment around us.

Excuse me，but I haven’t got theiPhone 4 ordered through the Internet． —Sorry madam,I’m sure youhave it by this Friday．

The students in our school go to school_____ Monday______ Friday.