He fell asleep immediately last night; he must ________ (be) very tired.

Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.

I wonder if he could get it ________ (do) before tomorrow.

Hefellasleepimmediatelylastnight;hemust________(be)verytired.

Ipreferthisdiagram________thatone.