1。We're trying to ring you back,Bryan,but we think we took down your number incorrectly是什么意思 2。I was given three books on cooking,the first of which Ireally enjoyed。
句中of which为什么不能用that或which。 3。If you Ican do some shopping for you。 That's a very kind _offer。 为什么要用offer,service, point, suggestion哪里不对。