We made plans for a visit but _____ difficulties with the car prevented it.
| A．consequent | B．subordinate |
| C．substantial | D．subsequent |
.In this experiment, they are wakened several times during the night and asked to report what they__________.
| A．had just been dreaming | B．had just dreaming |
| C．are just dreaming | D．have just been dreaming |
--I hear Michael is in hospital.
----Oh, really? I____know. I______go and visit him.
| A．didn’t; am going to | B．don’t;would | C．don’t;will | D．didn’t; will |
Children find_____difficult to sit for hours with little to do while flying.
| A．which | B．this | C．that | D．it |
---Must I see a doctor right now?
----No, you______see a doctor for the time being.
| A．can’t | B．shouldn’t | C．needn’t | D．mustn’t |
This work, when we find it and do it----_________only as a hobby at first---is a key to our true happiness.
| A．even if | B．only if | C．as if | D．if however |