Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.
Wewerebusy________(get)thingsreadyforthetrialproductionwhenhephonedus.
Howlong________they________(dig)theditch?
Night________(fall),wehurriedhome.
You________gonow.It’sgettinglate.
Herefusedtotelluswhetherhe________(undertake)thejob.
