______ for a long time the fields are all dried

His ideas are linked to the theory________markets are efficient, which means market actors taking all available information to create the correct price for things at any given time.

Lao Lin has been working in the countryside for a long time, so he _______ farm work.

By this time next year, we___all the land into rice fields.A．we had turnedB．have turnedC．h

They are sweating all over. They ______ in the field.A．may beB．must have been workingC．cou

______ for a long time, the ponds are all dried up and a lot of fish are dead.A．There has

The manager spoke for a long time but his meaning did not______.A．come aboutB．come alongC．