Polar bears live_______ on sea ice，which they use as a platform for hunting seals

We should’t only be satisfied with the present life, We are trying to look ______ and see what our future will be like.

—I thought he hated TV.—You are right, ______. he still watches the program.

. --- This book by Tony Garrison is of great use for our course. --- But I think his latest one is______ worth reading.

---You  aren’t  looking  well. Anything the matter?---I’ve  been  surfing the net too long. I’m a bit tired.I can hold on,____.