He is so busy with the research he has no time left for any other activity.
| A．which | B．that | C．why | D．because |
_____ succeed in doing anything.
| A．Only by working hard we can | B．By only working hard we can |
| C．Only we can by working hard | D．Only by working hard can we |
Nowhere else in the world _____ cheaper tailoring than in Hong Kong.
| A．a tourist can find | B．can a tourist find |
| C．a tourist will find | D．a tourist has found |
—— This is one of the oldest trees in the world.
_____ such a big tree.
| A．Never I have seen | B．I haven't never seen |
| C．Never have I seen | D．I have seen never |
Not until he arrived home _____ he find that this wallet had been stolen.
| A．did | B．would | C．when | D．that |
—— Do you know Jim quarreled with his brother？
I don't know, and ______ .
| A．nor don't I care | B．nor do I care |
| C．I don't care neither | D．I don't care also |