C．hoped D．helped

答案　B

解析　suggest建议，暗示；hope希望；help帮助；expect期待，be expected to do sth.被期望做某事。语境表示"他们总是被期待着比他们实际所能够做到的做得更好"。故选B。

In his youth，however，he never left his home town，let alone travelled to another country...

但是，在他年轻时，他从没有离开过自己的家乡，更不用说去其他国家了......

(let alone更不用说

let/leave sb.alone不打扰某人，别烦某人

let/leave sth.alone别碰某物；别管某事

let sb.down使某人失望

let go of 放手，松手，放开，使自由

let out使出去，放出；泄露秘密；发出

let in使进来，进入

(1)When my father is upset，he would rather we left him alone.

当我的父亲烦恼的时候，他希望我们不要打扰他。

(2)I can't afford to pay my school fees，let alone buy a new computer.

我连学费都支付不起，更别说买一台新电脑了。

(3)In those days，we couldn't send our children to middle school，let alone college.

那时候，我们的孩子连中学都上不起，更不用说上大学了。

(4)Let/Leave him alone and he will stop crying soon.

让他一个人待着，过会儿他就不哭了。

(5)You can believe in him；he'll never let you down.

你可以信赖他；他从不会让你失望的。

(6)I can tell you the truth，but you must promise not to let out the secret.

我可以告诉你真相，但是你得答应不要把这个秘密泄露出去。