It’s certainly hard work. But, ________, a man who wishes to have a career has to make a
great many sacrifices.
| A．on the contrary | B．on the other hand | C．for another | D．in addition |
The ___ look on his face showed that he hadn’t expected it .
| A．astonished | B．astonishing | C．being astonished | D．having astonished |
___ from space, the earth with water ___70％ of its surface looks like a "blue blanket".
| A．Seen; covered | B．Being seen; covers | C．Seeing; covering | D．Seen; covering |
____ more attention, the trees could have grown better.
| A．Given | B．To give | C．Giving | D．Having given |
Someone is ringing the doorbell. Go and see ______ .
| A．who is he | B．who he is | C．who it is | D．who is it |
_________ I will visit Brazil during the 2016 Olympic Games.
| A．If I am possible | B．If it possible | C．If I possible | D．If possible |