171. You should put down your jacket, otherwise both of you will have a quarrel. That will make things worse. The underlined part probably means _____.
| A．wear your jacket | B．take off your jacket | C．not be excited | D．throw away the jacket |
_____ hard I try, he just refused to listen to me.
| A．However | B．Whatever | C．Whenever | D．Wherever |
She was angry only _____ they were late again.
| A．for | B．as | C．because | D．since |
Young people should go ____ working conditions are difficult.
| A．in which | B．which | C．that | D．where |
On a peaceful summer day, he went to swim in the sea _____.
| A．at the first time | B．for the first time |
| C．the first time | D．in the first time |
Those who have trouble _____ can grow crops vertically on trellises.
| A．bending | B．bent | C．bend | D．to bend |