It has been five days ______ the little girl left home. A. since B. after C. until
I have an _______ reading book. Are you _______ in it?
I _______ a museum with my friends at this time yesterday.
—Kangkang, can I borrow your bike? —_______
—Would you like to go for a picnic with us? —_______, but I’m too busy.
If it _______ sunny tomorrow, I ______ the Great Wall.