Jane is______ researching into the life of wildlife and can’t spare time to care for his wife and children.
| A．absorbed to | B．occupied in | C．engaged to | D．concentrated to |
You are wet through . You ____ in the rain .
| A．must come | B．must be caught | C．must have caught | D．must have got caught |
Put on more clothes . You ____ be feeling cold with only a shirt on .
| A．can | B．could | C．would | D．must |
As a soldier , you ____ do as the head tells you .
| A．will | B．shall | C．may | D．ought |
Look! Xiao Wang is too sleepy to work . He ____ up watching TV .
| A．mustn''t have stayed | B．shouldn''t have stayed |
| C．mustn''t stay | D．ought not to stay |
The streets are all dry . It ____ during the night .
| A．can''t have rained | B．mustn''t have rained | C．couldn''t rain | D．shouldn''t have rained |