---I don’t know how to write the article assigned by our professor on international trade.
--You should have ______ your attention on the lecture that ______ how international situation affects exports and imports across the globe.
A. put; concentrate on B. paid; talked about
C. fixed; dealt on D. focused; focused on
The operation room in every hospital has to _______bacteria of any kind so that the patient being operated on doesn’t get infected.
A. keep free from B. make it free from C. to be made free with D. be kept free from
The father has been ____ for many years in order that his only son can be ____ with higher education.
A. fighting; served B. struggling; equipped
C. working; offered D. laboring; received
People often make a mistake about my nationality. I was born of Chinese parents , _____, I look ______ but I was born and grew up in America, so I am an American.
A. however; Chinese B. therefore; Chinese
C. so; the Chinese D. therefore; a Chinese
The book, which ______ for children under 10 when ________, are popular with adult readers.
A. intended; written B. was intended; being written
C. intended; writing D. was intended; written
When forbidden to surf the Internet, teenagers often _____ surfing it, saying that it provides them with colorful entertainments, a convenient means of communication as well as useful information
A. argue about B. argue with C. argue for D. argue against
