... b) have, found c)does,find d)will ,find 20.I …a return ticket for Paris a) bought b) will bought c)have bought d)have buying 21 .The scientists….to London lately a) are not being b) weren’t c)don’t ... seing c)did,sleep, shan’t see d)is, sleeping, don’t see 23.Our family….a new washing machine the day before yesterday It…modern a)will buy,will be b) has bought, is c) bought, is d) is buying, has...