The building which _____________ at present will be used for scienceA、 is repairingB、has

If the building project___________ ？

They__________ building the irrigation canal very soon．A.are finishingB.are going

The new design of building would install______, which is a big progress in quake-proof.A．r

These magnificent ______ buildings demonstrate the great intelligence of the laboring peop

It is during the reign of______that Britain build up an empire "on which the sun never set

They are building a bridge __________ the river.A. throughB. acrossC. on