The school authorities and the teachers ________ over the advantages of the demerit(缺点)system．

were always argued

were always arguing

had always had argued

had always been argued

I argued ________ my best friend．

with

at

for

about

There is no point in even ________ an explanation－he will never listen．

being attempted

having attempted

attempt

attempting

A man is being questioned in relation to the ________ murder last night．

advised

attended

attempted

admitted

He ________ to persuade Eric, but he failed．

attempted

succeeded

managed

admitted

I am a new ________．I was hired yesterday．

employer

employee

employment

fence

________ for the breakdown of the school computer network, Alice was in low spirits．

Blaming

Blamed

To blame

To be blamed

The mother didn’t know who ________ for the broken glass．

will blame

was to blame

blamed

blames

The news was so ________ that we all felt ________ at it．

delighted：delighted

delightful：delightful

delightful：delighted

delighted：delightful

So biologists were ________ early this year when with the help of the Navy, they were able to ________ a particular blue whale for 43 days, monitoring its sounds．

delighting：keep track of

delighted：keep in touch of

delighting：keep an eye out

delighted：keep track of