A.after | B.before | C.what | D.that |
A.when | B.that | C.which | D.how |
A.is; that | B.was; that | C.is; where | D.was; where |
A.During the first half of the 20th century |
B.That it was in the first half of the 20th century |
C.It was in the first half of the 20th century |
D.It was the first half of the 20th century |
A.do | B.did | C.does | D.doing |
A.am | B.have | C.do | D.be |
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