Many rules in English are ______, and large numbers of students feel ______ them.
| A．puzzled; puzzled with | B．puzzling; puzzled about |
| C．puzzled; puzzling with | D．puzzling; puzzling about |
It is the test system, rather than the teachers, ____ is to blame for the students' heavy burden nowadays．
| A．who | B．this | C．that | D．whom |
Many children are ____ in the countryside when their parents flood into the cities for jobs．
| A．left behind | B．left off | C．left aside | D．left out |
The UN officials say it could be many weeks and even months ____ a deal is reached．
| A．before | B．after | C．when | D．as |
Either the ways or the time ____ yet, but you may ask the headmaster for some information．
| A．isn’t decided | B．hasn’t decided | C．aren’t decided | D．haven’t decided |
The purse found on the playground matches the ____ by Mary, so it must be hers．
| A．direction | B．description | C．expression | D．instruction |