It is generally considered unwise to give a child ________ he or she wants.
| A．however | B．whatever | C．whichever | D．whenever |
Mary had to go to a meeting，so she left her children ___________ at home.
| A．playing | B．played | C．to play | D．having played |
A cell phone could ___________the energy which could activate your brain.
| A．give away | B．give off | C．give back | D．give up |
I think it a great honor ___________ to visit your country.
| A．to invite | B．inviting | C．having invited | D．to be invited |
— What do you think of modem music?
— It is often considered not as good as ___________ of the past.
| A．it | B．this | C．that | D．one |
Students ___________ remain in their seats until all the papers have been collected.
| A．may | B．shall | C．need | D．can |