—How long do you think it is ________ he arrived here?
—No more than half a year, I believe.
| A．when | B．that | C．before | D．since |
The couple are spending their holiday onis described as ore of the most beautiful
islands．
| A．what | B．that | C．which | D．where |
It isn’tthat I should accept such an offer as that．
| A．seem | B．appear | C．likely | D．possibly |
Over the past l00 years，sea levelsteadily as a result of global warming．
| A．had increased | B．has been increasing | C．increased | D．is increasing |
It is difficult to between Mary and her younger sister
| A．decide | B．distinguish | C．explore | D．express |
You have done so much that you are pass the exam．
| A．bound to | B．turn to | C．adjust to | D．object to |