This is _____ ruler, and that is ______ ID card.A.an;an B. a, an C. an,a
Qomolangma is _______ high _______ very few people can climb up to the top of it.
–Whose is this purple scarf? –It _______ be Mary’s. She always wears a purple scarf like this.
Please _______ spend too much time playing computer games. It wastes a lot of time.
–Victor, could you please speak more _______ so that everyone can understand you? –OK.
It’s not easy to learn a foreign language, but I will never _______.