She made an a to solve the puzzle, but she couldn't figure it out.

1. She made an a to solve the puzzle, but she couldn't figure it out.

【考点】

固定短语; 可数名词;

【答案】

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单词拼写（单句）普通

1. If you are on a tight b, I recommend that you buy the basic version because it's considerably cheaper.

单词拼写（单句）容易

2. Wood is a poor (conduct) of heat and electricity.

语法填空（单句）容易

3. Whatever happens, he always greets his students a big smile.

语法填空（单句）容易