问题

More than one worker sent to the training center to improve their working skills in the past three years.
A:is
B:has been
C:are
D:have been;
B:has been
C:are
D:have been;
正确答案是:
同类题型
Tere are a few books on the shelf. But only one of them is _______
Students are always interested in finding out _______ they can go with a new teacher.
to get another dictionary, because coveris dirty and page is missing
I hear Johnson was badly injured in the accident.— _______ let’s go and see him.
She ___________ his number in the phone book to make sure that she had got it right.