My friend Martin was very sick with a strange fever; ________, he could neither eat nor sleep.
The Great Green Wall will stop the wind from ____ the earth away.
Do you practice ______ English every morning?
----Boys and girls, will you please ____ the park this afternoon? ----OK.
--Excuse me, sir. Look at the sign on the wall “NO ____”. --Oh, I’m sorry. I’ll never do it again.
John asked David how ____ Christmas.