高二英語Science versus nature教案
a. if invited b. if having invited c. if i was invited d. if i will be invited
25. the students, ____ at the way the question was put, didn’t know how to answer it.
a. being surprised b. surprised c. surprising d. having surprised
26. _____their study, many chinese students overseas return to china.
a. having been completed b. completed c. having completed d. completing
27. swan lake is a famous ballet in four acts, _____ on a german fairy tale.
a. basing b. based c. to base d. bases
28. ______ from other continents for millions of years, australia has many plants and animals not found in any country in the world.
a. being separated b.having separated c. having been separated d. to be separated
29. _____ such heavy pollution, the river is unlikely to be cleaned up in such a short time.
a. suffer b. having suffered c. being suffered d. to suffer
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26-29cbcb