Studies show that people are more_______to suffer from back problems if they always sit before computer screens for long hours.
| A．likely | B．possible | C．probable | D．sure |
-----My room gets very cold at night.
-----_________________.
| A．So is mine | B．So mine is | C．So does mine | D．So mine does |
At the end of the meeting, it was announced that an agreement ________.
| A．has been reached | B．had been reached | C．has made | D．signed |
----She looks happy. She _______ have passed the exam.
-----I guess so. It is not difficult after all.
| A．should | B．could | C．must | D．might |
Choosing the right dictionary depends on ______ you want to use it for.
| A．what | B．why | C．how | D．whether |
More than a dozen students in that school _______ abroad to study medicine last year.
| A．sent | B．were sent | C．had sent | D．had been sent |