You________gonow.It’sgettinglate.
A、hadratherTosucceedinascientificresearchproject________.
I wonder if he could get it ________ (do) before tomorrow.
Herefusedtotelluswhetherhe________(undertake)thejob.
He fell asleep immediately last night; he must ________ (be) very tired.
________ (fail) several times, they need some encouragement.
