[单选] 依次填人下列句子中最恰当的一组词是(　　)①嗜血成性的敌人仗着他们人多，工事坚固，一步不退，拼命______。 ②一个老农捧起一把泥土，仔细______，想鉴定它究竟适宜种植什么谷物和蔬菜。

相关题目:

• [单选] I remember _______ her at the party last week．
• [单选] I have four letters to write today and I have finished_________．
• [单选] His hands _______ a little as he took up a pen and began to write．
• [单选] ________at his model plane over the weekend，he didn’t complete it．
• [单选] I looked and looked，and at last I made out two figures moving slowly in the _______.