1. Atry B tried C trying D having tried
2. Aautomatically B accidentally C tremendously D usually
3. Achanged B located C developed D copied
4. Aby B up C about D to
5. Aforms B is consisted ofC composed of D includes
6. Aread B reading C reads D being read
7. Aon B in C of D at
8. A car maker B policeman C doctor D operator
9. A via B near C by D besides
10.A assists B causes C makes D helps
11. A number of B deal of C amount of D volume of
12. A writer B reporter C expert D leader
13. Aalready B long ago C long before D shortly
14. Aalthough B nevertheless C however D if
15. Acity B year C person D country
参考答案：C、A、C、D、D、B、B、D、A、D、C、C、A、D、B
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