宾语从句的基本用法 — 英语填空题
题目
用括号内所给单词将句子补充完整（填空）。The exchange students want to know ___ (that / whether) they should bring some gifts to their host families. I believe ___ (that / whether) this trip will be a wonderful experience. Please tell me ___ (that / whether) we can use the host family's Wi-Fi.