It was because I was caught in the traffic jam ________ I came to school late this morning.
Photography can be ______excellent hobby for kids.
Tell Sally to call _____, please.
—Merry Christmas! —_______.
The policeman caught the thief ______ has stolen Mr. Li’s computer.
—Miss Gao, I am feeling bored. Would you mind my ________ here? —You had better not, for smoking is forbidden in public now.