Ancient Greeks used a giant wooden horse to capture the city of Troy.( )
A.hugeB.wonderfulC.wide
The Three Gorges Dam produces _____for millions of people in China.( )
A.electricityB.influence
C.transportD.technology
Students here often do physics experiments _____small groups.( )
A.byB.inC.forD.at
To prepare for _____trip to LA, Betty is making _____list of things to take along.( )
A.the; theB.不填; aC.the; aD.a; 不填
There is so much noise in the next room.I wonder__________________.( )
A.what are they doingB.what were they doing
C.what they are doingD.what they were doing
Smile to the world, ________the world will smile back to you.( )
A.andB.orC.butD.if