13. I always hate _____________in public.
a. speak b. speaking d. spoken d. be spoken
14. We've had to postpone ______________to France because the children are ill.
a. go b. to go c. went d. going
15. I heard the orchestra _________ at Carnegie Hall last summer.
a. playing b. play c. to play d. played
16. He had tried __________ a language before he left school.
a. to learn b. learn c. learned d. learning