Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.
Some molecules are large enough ________ (see) under the electronic microscope.
Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.
Wewerebusy________(get)thingsreadyforthetrialproductionwhenhephonedus.
He asked me whether my brother ________ (fly) to Beijing.
