_________ TO FRIENDS IS NICE BUT _________ ALONE IS ALSO ENJOYABLE...

13. - ON THI DAI HOC TIENG ANG CO DAP AN
ON THI DAI HOC TIENG ANG CO DAP AN
13. _________ to friends is nice but _________ alone is also enjoyable.a. Talk/ to be b. To talk/ be c. Talk/ be d. Talking/ being