Modals help main words to form finite verb phrases, in which only one modal can be used, and it is always the first word in the phrase.
A.正确
B.错误
正确答案:正确
Modals help main words to form finite verb phrases, in which only one modal can be used, and it is always the first word in the phrase.
A.正确
B.错误
正确答案:正确