【题目】You're getting fat. You do more outdoor exercise. ( )
A. will have to
B. will must
C. must to
D. has to
【答案】A
【解析】
句意:你越来越胖了。你……多做些户外运动。have to不得不,must必须,根据第一句说越来越胖,第二句应是表达因为胖而多做运动,客观需要,用have to。做运动是即将要发生的事情,用一般将来时。故选A.