This is off topic, and not related to homework, but I want fuzzy socks, a cat, and some books.
Answer:
A friendly smile and a firm handshake<em> were</em> working well for Eric
Explanation:
A friendly smile and a firm handshake was working well for Eric.
this is wrong
because A friendly smile is different and a firm handshake is also different
so we need to use<em> were</em> instead of <em>was</em>
<em></em>
<em>so a true sentence will be:</em>
A friendly smile and a firm handshake were working well for Eric.
Taught is in past tense, when you say he taught it means he has already done it
Punctuations are used in a sentence to organize and structure it properly. Moreover, it is used to create clarity and sense or to stress in a sentence. For example quotation marks " ", full stop (.), commas and so on.
Commas are frequently used punctuation in a sentence, hence they are used to create a short pause in a sentence.
In the above sentences, the sentence which is punctuated correctly is C. After they rested a few days, the aliens revived sufficiently to explore.
When starting with the dependent clause, the sentence is punctuated after the dependent clause. In the above sentence dependent clause is <em>“After they rested a few days”</em>, hence as compared to other sentences it is punctuated correctly.
