专题4 情态动词与虚拟语气
1. helen __ go on the trip with us, but she isn’t quite sure yet.
a. shall b. must c. may d. can
2. i often see lights in that empty house. do you think i __ report it to the police’?.
a. should b. may c. will d. can
3. i __ pay tracy a visit, but i’m not sure whether i will have time this sunday.
a. should b. might c. would d. could
