You stepped into the lab with your shoes on? You’re _______ to take them off before you enter it.
| A．invited | B．supposed | C．forbidden | D．permitted |
Where was it ______ you _______ our maths teacher?
| A．where; came to | B．that; come across, |
| C．that; came across | D．where; come to |
----- Mary looks very upset. She _______ failed to pass the exam.
----- I guess so. It's very difficult after all.
| A． must have | B．could have | C．should have | D．might have |
— When could you have a meal with me? — I'd like to go ___ it is convenient to you.
| A．whichever | B．whenever | C．whatever | D．wherever |
— Who are you going to have _______ this letter for you?— My secretary.
| A．type | B．typed | C．been typed | D．been typing |
Not others but Mother always _____ children ______ in their beautiful clothes.
| A．keep; dressed | B．kept; dressing | C．keeps; dressing | D．keeps; dressed |