Hidden _____ by a big tree, his house was not to be seen.
| A．as it was | B．as it is | C．as it did | D．as he did |
13．About 90 percent of the equipment presented by the administration，as well as the facilities of our own， ______made good use of in teaching．
| A．have | B．has | C．have been | D．has been |
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
11． Nowadays，a large number of women，especially those who conicfromthe countryside，____in the clothing industry"．
A ．is working B．works C．work D worked
10、______ of the land in that district ______ covered with trees and grass.
| A．Two fifth…is | B．Two fifth…are | C．Two fifths…is | D．Two fifths…are |
9、The number of people invited ______ fifty, but a number of them _____ absent for different
reasons.
| A．were, was | B．was, was | C．was, were | D．were, were |