---- She looks happy. She ________ have passed the exam.
---- I guess so. It’s not difficult after all.
| A．should | B．could | C．must | D．might |
His _____of the aeroplane was correct in every detail and could really fly.
| A．shape | B．pattern | C．design | D．model |
The open university was started in order to help those who _____ having a university education when they were young.
| A．stopped | B．failed | C．missed | D．ceased |
The magician picked several persons from the audience and asked them to help him with the performance.
| A．by accident | B．on occasion |
| C．at random | D．on an average |
He has left his book here on _____, so that you can read it.
| A．purpose | B．intention | C．aim | D．meaning |
I remember her face but I cannot _____ where I met her.
| A．recall | B．remind | C．remember | D．remark |