______you have familiarized yourself with the basic commands, we can begin to le

游客2025-06-15  2

问题 ______you have familiarized yourself with the basic commands, we can begin to learn some of this program’s more creative features.

选项 A、Already
B、Before
C、Once
D、Earlier

答案 C

解析 you have familiarized yourself with the basiccommands是状语从句,因此横线处应填入从属连词。句意应为“一旦熟悉了基本命令”,故选(C)once(一旦)。
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