1．I have a new pen and several old ________.
A．one B．ones C．that D．those
解析：句意：我有一支新钢笔和几支旧钢笔。one可用来替代上文出现过的单数名词，ones可用来替代上文出现过的复数名词。此时，one/ones须有前置修饰语(如此句的old)。that可替代上文提到过的具有特指意义的可数名词单数或不可数名词。those可替代上文提到的具有特定意义的可数名词复数。但that/those常跟后置修饰语。
答案：B
2．He ________ his post because he had been offered a better job.
A．sought for B．quit C．resigned D．gave in
解析：句意：“他辞去了职务，因为他得到一份更好的工作。”根据题意答案是C。(A.词意不合语境，B.时态不对，D.是不及物的。)
答案：C
