已知反应:mX(g)+nY(g) qZ(g) ΔH<0,m+n>q,在恒容密闭容器中反应达到平衡时,下列说法中正确的是
My uncle came here _______the evening of October 7th.
—Is this your backpack? —Yes, _______.
—What’s this? —It’s_______.
_______, Linda. What’s this in English?
—Your English is very good. —_______.