Having a trip abroad is certainly good for the old couple, but it remains _________ whether they will enjoy it．

to see

to be seen

seeing

seen

Dr．Smith, I would like to ask you some advice for my future career．When are you _________, please?

available

present

handy

convenient

If you want to make more friends with foreigners, there are lots of websites _________ to you．

effective

available

valuable

affordable

I was going to attend Mary’s wedding party, but I couldn’t make it, for my car _________ on the way．

broke down

put down

broke up

put up

It’s Mary’s own fault if she feels _________ at the party; she makes no effort to be friendly to people．

left out

kept out

let out

left off

The records of Twins are _________ being bought, for their songs can bring us energy．

worthy

worth

worthwhile

worthy of

In the meantime, the question facing business is whether the research is _________ the costs．

worth

worth of

worthy

worthwhile

They did not find _________ to prepare for the worst conditions they might meet．

worth

it worthwhile

it worth

it worthy

Violence on TV may turn out to be a strong _________ on some young people．

impression

expression

influence

influential

I’d like to see you whenever it’s _________ for you．

convenient

fit

suited

efficient