Over the past l00 years，sea level steadily 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
The fact has worried many scientists the earth is becoming warmer and wormer．
A．what B．that C．though D．which
Do you still remember the rider and his new bike we saw in the street last week?
A．which B．who C．that D．whom
Tony the fact that he had made a mistake．
A．accounted B．permitted C．allowed D．acknowledged
