问题详情：
词汇运用。根据句意及汉语提示填写单词。
1．His grandfather is very ________(严肃的) and I hardly see him laugh.
2．Did you break your left ________(胳膊) in the P．s?
3．They ________(到达) Wuhan at around 4：00 yesterday afternoon.
4．It's ________(必要的) for you to learn English well if you want to work in the US in the future.
5．—I hear Mary keeps four dogs.
—Yes，she loves has a kind ________(内心)．
【回答】
ous hed ssary t
知识点：单词拼写
题型：单词拼写
