Let’s have a talk over this matter this afternoon, or __________ it is convenient to you.
| A．wherever | B．whichever | C．however | D．whenever |
I’llnevertrustsuchaman______youdescribed.
| A．that | B．what | C．whoever | D．as |
A NASA experimental jet , the X-43A,flew at a world –record speed ---11,260 kilometres an hour on November 17.This speed is __ as that of sound.
| A．astentimesfast | B．tentimessofast | C．tentimesasfast | D．tentimesfaster |
On ____ the accident, he felt frightened.
| A．saw | B．sees | C．seen | D．seeing |
I won’t see the film tonight. I am busy. ____ , it is raining cats and dogs.
| A．somehow | B．however | C．besides | D．as well as |
Computers ____ in offices and homes since 1970s.
| A．have been used | B．had been used | C．was used | D．has been used |