“Where’s my book? I can’t find it”.“It _______ on your desk.”
Don’t forget ________ the lights before you go to bed.
—Which sport is the most popular in China? —I think ______ is.
She wants to have good grades, _____ she doesn’t want to work hard.
Our teacher said that light______ faster than sound.
Jack is _____ busy ______ he often forgets to have breakfast.