________ more attention, the trees could have grown better.

[　　]

A．If given

B．To be given

C．While being given

D．If giving

--I usually go there by train.

--Why not ________ by boat for change?

[　　]

A．to trying going

B．try going

C．try to go

D．trying to go

Most of the people ________ to the party were famous scientists.

[　　]

A．have been invited

B．to be invited

C．being invited

D．invited

________ in thought, he didn't notice that everyone ________.

[　　]

A．Lost; had gone

B．Losing; gone

C．Being lost; went

D．To be lost; went

________ the end of six months, Karl Marx ________ Russian well enough to read books in it.

[　　]

A．By; had learned

B．At; had learned

C．In; learned

D．At; learned

Was it in the street ________ you met the famous musicians?

[　　]

________ a reply from his friend, he decided to write to her again.

[　　]

A．Received

B．Not received

C．Not having received

D．Having not received

Jackie, as well as his brother and parents, ________ to the park on Wednesdays.

[　　]

He is a good director, ________ he made a film, his film was well received

[　　]

________ he took part in the competition, he won a second prize.

[　　]