He didn’t make ______clear when and where the meeting would be held?
| A．this | B．that | C．it | D．these |
–Jack is good at maths and doesn’t perform well in English.
–_____.
| A．It was the same with Mike | B．So it is with Mike |
| C．So is Mike | D．So does Mike |
It is these poisonous products _____ can cause the symptoms of the flu, such as headaches and aching muscles.
| A．who | B．that | C．how | D．what |
–Are you coming to Jeff’s party?
–I’m not sure. I _____ go to the concert instead.
| A．must | B．would | C．should | D．might |
Sorry, I am late. I _____ have turned off the alarm clock and gone back to sleep again.
| A．might | B．should | C．can | D．will |
Children under 12 years of age in that country _____ be under adult supervision when is a public library.
| A．must | B．may | C．can | D．need |