Grade 11 English unit 1: Environmental Hazards

In paragraph 1 of the reading text, the writer says that anthropogenic air pollution accounts for about 9 million deaths per year. The 3 billion figure in the text is about people who use wood fuel or solid fuel for cooking and heating, not about deaths.

In the simple present, we add -s to the verb when the subject is third person singular (he, she or it). "My sister" is she, so the verb is goes.

The unit says a phrasal verb is a verb and a particle (an adverb or a preposition) that together make one meaningful unit. Examples are turn down, run into and set up.

A semicolon is used to connect two independent clauses. Both The concert tickets were expensive and we went to the movies instead can stand alone as sentences, so a semicolon after "expensive" joins them correctly.

Although starts an adverb clause of concession. It shows a contrast: they enjoyed the walk even though the rain came. The other words do not show a contrast, so they do not fit the meaning.

When the speaker says "I am sure", they are expressing a personal belief about the future. The unit gives the pattern The winner will be awarded for this use, so will be is correct.

The word seek has the long vowel /i:/ like need, keep and feel. The words sit, sick and rich have the short vowel /ɪ/, which is the other sound in the pairs from the unit.

A proper noun names a specific place, person or thing. "Asmara" is the name of one specific city, so it is a proper noun. Common nouns refer to things in general, such as city.

The unit says that although cannot be used at the end of a sentence. Though can be used at the end, as in I think I did well, though. Because and unless do not show the contrast needed here.

A comma splice joins two independent clauses with only a comma. In option A, a comma alone joins two complete ideas, which is not correct. Option B uses a comma with and, option D uses a semicolon, and option C is a fragment, so none of those is a comma splice.