【推荐1】Slowly, the city began to ________ (呼吸) again. (根据汉语提示单词拼写)

【推荐2】The masks are comfortable, easy to ________(呼吸) through and can be reused up to 20 times depending on the user's wear time.

【推荐3】We had difficulty ________ (呼吸) at the top of the hill, for the air was very thin there. （根据汉语提示单词拼写）

【推荐2】Our main mission is to conduct scientific research. We need to e _______(评估)the effects of low gravity on animals and plants. (根据中英文提示填空)

【推荐3】The company researched the market demand and decided to __________(推出)   their new product. （根据汉语提示单词拼写）

【推荐1】Japan had h_______ a plot to ________(发动) a surprise attack on Pearl Harbor, so the attack began without warning and without d________ war on the United States.(根据首字母和汉语提示单词拼写)

【推荐2】I’m most unwilling to c________, but the frequent interruption of your assistants is really annoying. （根据首字母单词拼写）