The students couldn't help ______ when they heard the joke. A. to laugh B. laugh C. laughing
( ) He said the sun _______ in the east and _______ in the west.
( ) We will go shopping if it _______ tomorrow.
( ) One of the boys _______ a black hat.
( ) Jenny _______ in an office. Her parents _______ in a hospital.
( ) I can’t catch up with the fashion, because the clothes style _______ all thetime.