20.---------the English exam is difficult , isn’t it?
-------__Yes. Even Tom, ________to the top students, failed .
| A．belonging | B．belonged | C．to belong | D．Belongs |
Sometimes,________ we show our gratitude for a person is reflected in the kind of food we serve him or her.
| A．when | B．whether | C．why | D．how |
Nearly half a million people are believed _________ their homes in the past months as a result of the disaster.
| A．to leave | B．to have left | C．to be leaving | D．to be left |
If he _______ to the teacher attentively in the past year, he _______the answer to the question now.
| A．had listened; would know | B．listened; knew |
| C．listens; knew | D．has listened ;knows |
“I’m more nervous right now than when I _______,”Jane said ,as she saw a group of reporters waiting anxiously at the exit of the gymnasium.
| A．had competed | B．competes | C．was competing | D．have competed |
----- Mum, I still want to watch the football match between China and Thailand now.
------Ah, the first month-test is approaching,_______ you watch so bad a game ?
| A．Must | B．Can | C．May | D．Need |