．The International Day against Drugs, aimed at warning people to keep away from drugs， _________ on June 26th every year．
| A．taking place | B．takes place | C．took place | D．taken place |
Both of you claim you are right.In fact，either you or he ________ wrong.
| A．are | B．is | C．were | D．was |
Either you or one of your students ________ to attend the meeting that is due tomorrow.
| A．are | B．is | C．have | D．be |
He jumped at the opportunity when he saw the advertisement in a newspaper，because barely ________ make ends meet.
| A．he could | B．could he |
| C．he couldn't | D．couldn't he |
Every evening after dinner，if not ________ from work，I will spend some time walking my dog.
| A．being tired | B．tiring |
| C．tired | D．to be tired |
—I didn't go to see the doctor yesterday.
—But you ________.
| A．ought | B．ought to |
| C．ought to be | D．ought to have |