Last night he saw two dark _____ enter the building, and then there was the explosion.

The time has come _____ we make extensive use of nuclear energy.

Finally,thethiefhandedeverything____hehadstolentothepolice.

"The lecturer was a tall thin man with white hair." "Then it _______Dr.Fell because he is short and fat.It_____Dr.Jones;he is thin."

Do you know the name of that _____ insect?