A chemical factory _______ early this morning, causing three deaths and a lot of injuries.
A. blow up
B. has blown up
C. was blowing up
D. blew up
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Almost all countries have set up barriers (壁垒) to________national industries.
A. protecting
B. protector
C. protect
D. protest
They no longer_______ alcohol or cigarettes at sporting events.
A. advertisement
B. advertiser
C. advertising
D. advertise
You are likely to be the target of online predators if you don't _______your personal information when online.
A. apply for
B. make public
C. keep private
D. make do with
Many women tend to choose this_________because it fits perfectly with their economic, political and social goals.
A. style
B. stylist
C. stylish
D. stylistic