下列各句中，没有语病的一句是 （ ）

My pen pal Ann found it difficult ______ Chinese well.

Ken, why do you look so tired—I _____ myself _____ the climate since Icame here.

I was really anxious about you. You _____ __ home without a word.

Please ________ the numbers and I’m sure they will ________ more than 1,000.