3．Oh, hang_on！I think I know where they ended up.

　　4．Sorry, I have to ring_off. It's time for me to go to work.

　　5．I see. Can you call me back at this number when you get_through?

　　6．Know your choices when you set_out to research a paper.

　　7．With face masks, air tanks and diving suits, men can dive_into deep water and be at home with the fish.

　　8．He's not in; why don't you ring_back after 6 o'clock?

　　[本单元语言点温故练习]

　　Ⅰ.单句语法填空

　　1．Hurry up, or you'll be late for the train.

　　2．These events provided the inspiration (inspire) for her first book.

　　3．It is so cold and freezing (freeze) that we have to stay at home.

　　4．The first time I flew in a plane I was really nervous.

　　5．This will be the best novel of its kind ever written (write)．

　　6．The guests left most of the dishes untouched (untouch), because they did not taste delicious.

　　7．When would it be convenient for you to_go (go) to the supermarket with me?

　　8．The new government must set about finding (find) solutions to the country's economic problems.

　　Ⅱ.补全句子

　　1．This old photo often calls_up_memories_of_my_childhood.

　　这张老照片经常唤起我对童年时代的回忆。

　　2．He got up very early so_that_he_could_catch_the_train.

　　他起得很早以便能赶上火车。

　　3．It's_very_convenient_to_pay by credit card now.

　　现在用信用卡付款很方便。

　　4．This young man is_distinguished_for_his_inventions.

　　这个年轻人因自己的发明而出名。

　　5．The pilot reassured the passengers.Only then did_I_realize how dangerous the situation had been.

　　飞机驾驶员要乘客们放心。直到那时我才明白刚才的情况有多危险。

　　6．There_seemed_to_be_a_river five years ago, where three buildings have been set up.

　　五年前这儿好像有条河，现在已建成了三座建筑物。

7．Someone seized_me_by_the_arm when I was walking in the street.