“Is there a flight to London this evening?” “There be. I’ll phone the airport and find it

问题补充：

“Is there a flight to London this evening?” “There be. I’ll phone the airport and find it out.”

A. must

B. might

C. would

D. can

答案：

A. must

(答案→)B. might

C. would

D. can

解析：根据下文的 I’ll phone the airport and find it out 可知，说话人对自己的推测没有很大把握，故选 might。若选A，语气太强，不合语境；若选D，不合语法习惯，因为can 表推测通常不用于肯定陈述句中。