【推荐1】You should be careful when making a ________ (承诺).

【推荐2】He can ________ (保证) to send me some postcards.

【推荐3】Jack p________ to bring me the key, but he forgot.

【推荐1】He ________ (描述) the criminal had long straight hair.

【推荐2】He once ________（犯过许多错误）during the course of learning English.

【推荐1】Each of us ________ （回复） to the teacher’s question but nobody was right.

【推荐2】It didn’t move, so she ________(推) harder.

【推荐3】根据句意及首字母或汉语提示完成单词，使句子的意思完整、正确。
1. Our new school c______ an area of 4.5 square kilometres.
2. We bought a lot of souvenir(纪念品) during the t______ last month.
3. It was so cold this morning that some ice______(形成)on the window.
4. Who ______(介绍)one of his best friends to us just now?
5. The new bike under the tree is the______ (主席) .