19.Hard as the teacher tried to make the kids __________,the heavy snow outside won the battle against their attention.( )
A. | accomplish | B. | concentrate | C. | switch | D. | recover |
18.You don't need to make fancy foods to impress guests-it is something simple but good _____ will do.( )
A. | what | B. | that | C. | which | D. | who |
17. most parents care about is to provide the best education for their children.( )
A. | That | B. | How | C. | What | D. | Whether[Z |
16.The dancers,all of _______ masks came off suddenly,gave us a great surprise.( )
A. | their | B. | whose | C. | which | D. | whom |
15.Every camera we sell in our shop comes with a two-year _______.( )
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A. | guarantee | B. | safety | C. | evaluation | D. | instruction |