________ the Internet is of great help, I don't think it's a good idea to spend too much time on it．

If

While

Because

As

The companies are working together to create ________ they hope will be the best means of transport in the 21^st century．

which

that

what

who

The manager as well as the staff ________ chatting cheerfully during the tea break when the boss came in．

were

have been

was

has been

The growing speed of a plant is influenced by a number of factors, ________ are beyond our control．

most of them

most of which

most of what

most of that

It was hard for him to learn English in a family, in which ________ of the parents spoke the language．

none

neither

both

each

Make sure you've got the passports and tickets and ________ before you leave．

something

anything

everything

nothing

Was it in 1969 ________ the American astronaut succeeded ________ landing on the moon?

when; on

that; on

that; in

then; in

The day we had been looking forward to ________ at last．

come

came

coming

be coming

We had an anxious couple of weeks ________ for the results of the experiment．

wait

to be waiting

waited

waiting

I hear they've promoted Tom, but he didn't mention ________ when we talked on the phone．

to promote

having been promoted

having promoted

to be promoted