I found _________difficult to work out the problem.A it’s B this C that D it
It’s sometimes hard to tell one twin from _____.
--Where is your father? ---- He _____ Australia and he _____ Sydney for two weeks.
----Have you ever been to Shanghai? ----Yes. I _____ there with my father last year.
---- Do you know the _____ of the stone? ---- Yes. It _____ about 200 kilos.
For most people, it’s very difficult to _____ air on the top of Qomolangma.