Facing danger, he always _____ calm.
| A．seems | B．remains | C．becomes | D．appears |
Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.
| A．which | B．what | C．that | D．when |
In1994, China began collecting income tax from citizens earning more than 800 Yuan per month but only 1% people were earning more than _______; now about 60% earn the amount.
| A．this | B．these | C．those | D．that |
The man ____ of shooting 16 schoolchildren was returned to Anhui Province police on Friday following his arrest by Beijing police, the Xinhua News Agency reported on Friday.
| A．suspected | B．suspecting | C．being suspected | D．to be suspected |
It was _____ great shock to the world that two airplanes crashed into _____ World Trade Centre in New York on Sept．11．
| A．a；／ | B．the；the |
| C．a；the | D．／；the |
It was the training _______he had at school _______ made him good jumper．
| A．what；what | B．that；that |
| C．what；that | D．that；had |