— Mom，Dad is smoking again!
—Well，let him cut it ________ gradually since old habits die hard.
| A．off | B．down | C．up | D．out |
Theysatintheroomwiththecurtains_____.
| A．drawing | B．havingbeendrawn |
| C．drawn | D．beingdrawn |
Thepurse_____,theywenttothepolice.
| A．notyetfound | B．has’tbeenfound |
| C．beingnotfound | D．nothavingyetfound |
Theyfirstreachanagreementonthebasicprinciple,thedetails____later
| A．toworkitout | B．havingbeenworkedout |
| C．tobeworkedout | D．beingworkedout |
Christmas____,thefamilywasfullofexcitement.
| A．wasthenonlydaysaway | B．werethenonlydaysaway |
| C．thenonlydaysaway | D．havingbeenthenonlydaysaway |
____fiveminutes____beforethelasttrainleft,wearrivedatthestation.
| A．Therebeing;togo | B．Itwas;left |
| C．Ithad;left | D．Therewas;togo |