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Với những người yếu kém modal verb thì ADVANCED MODAL VERB EXERCISES là sự lựa chọn tốt cho bạn ADVANCED MODAL VERB EXERCISES You out last night I called several times but nobody answered the phone a must be b must have been c could have been d should have been Micheal’s score on the test is the highest in the class last night a he must have studied hard b he should have studied hard c he must study hard d he must had to study hard Look! The yard is wet It last night a must rain b couldn’t have rained c must have rained d should have rained We you more help, but we were too busy a might have given b might give c should give d could give You your pass at the entrance unless you are asked to so a mustn’t show b needn’t show c haven’t to show d B &C My supervisor is angry with me I didn’t all the work I. Với advanced modal verb exercise bạn sẽ có thể nắm vững các modal verb bằng cách làm bài tập một cách thành thạo.