第二语法和词汇知识(共15小题;每小题1分,满分15分)从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。We ____last night, but we went to the concert instead. A. must have studied B. might study C. should have studied D. would study
Tom was thinking about how to explain to the teacher why he was late for class, when a good idea _______him.
A recent study shows that health problems are closely_______bad eating habits and a lack of physical exercise.
The couple decided to adopt the child whose parents ________in an accident.
John is very _____---if he promises to do something he’ll do it.
The performance______ nearly three hours, but few people left the theatre early.