A. sign up B. log in C. register D. enroll
A. research B. report C. interview D. study
A. sale B. store C. mall D. shop
A. firm B. company C. corporation D. department
A. job B. major C. profession D. occupation
A. demand B. command C. require D. request
A. advertisement B. suggestion C. advice D. tip
A. metro B. subway C. railway D. underground
A. due to B. depend on C. thanks to D. because of
A. lead to B. result in C. give rise to D. in order to
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