单选题 We are going to ______ our house by building another room on to it.

【正确答案】 B

【答案解析】解析：enlarge vt．扩大；放大。develop v. 发展；成长，发育；开发，研制；逐渐显现出。spread v.摊开，伸开；散布，传播。stretch v.拉长，延，伸。