Playing tricks on others is___we should never do
| A．anything | B．something | C．everything | D．nothing |
―The weather is changeable here. Please take more clothes.
― _________.
| A．Well, it depends | B．Thanks, by no means |
| C．OK, just in case | D．Don’t worry |
The old lady who caught a bad cold complained that the doctor was ______ too much for the treatment given to her．
| A．paying | B．offering | C．spending | D．charging |
The international agreement, __________to help people kick off the habit of smoking, was signed two years ago.
| A．intended | B．intending |
| C．intends | D．to intend |
The fact has worried the people across the world ___________ the earth is becoming warmer and warmer these years.
| A．what | B．which | C．that | D．where |
A college student had stayed up all night, _______ for his test the next day.
| A．studied | B．having studied | C．to study | D．studying |