12.______of the land in that district_____covered withtrees and grass.A.Two-fifth;is B.Two-fifth;are C Two-fifths;is D Two-fifths;are
The captain urged that the mission ________ before dark.
The workers will go on strike if the demands they ________ put forward are turned down.
—Is Jack on duty today? —It ________ be him. It’s his turn tomorrow.
_______ with so much trouble,we failed to complete the task on time.
He asked me ________ with me.