_________, I think, and the problems would be settled.
| A．If you double your efforts | B．Making more efforts |
| C．So long as you don’t lose heart | D．A bit more effort |
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 |
Thepowerstationwasbuiltontheriverwithourvillageandsomeothers___withelectricity.
| A．tosupply | B．supplied | C．supplying | D．havingsupplied |
Allhiswork___,helefthisofficeatease.
| A．finished | B．hadbeenfinished | C．finishing | D．tofinish |