Yes! The tense has to stay consistent throughout the sentence! ;)
Answer:
The correct answers are:
2. unattractive
5. However
Explanation:
In sentence number 2, the correct answer would be <em>unattractive</em>, as we can notice the shop windows discourage shoppers because of their emptiness. <em>Bustling </em>means full of activity, <em>impressive</em> means special, important or really large, so those options cannot be considered as a correct answer. Option A could be the correct answer, but <em>unattractive </em>fits better at the context then <em>frequent</em>.
In sentence number 5, the correct answer would be <em>however</em>. <em>Because</em> introduces causes and reasons, by introducing a subordinate clause, which needs a main clause to make it complete. Therefore, it cannot be considered a correct answer. <em>Although</em> means in spite of something and it can be used at the beginning or in the middle of a sentence, but it doesn't have a comma afterward and it cannot be considered as a correct answer.
We use <em>otherwise </em>to introduce a thought or an idea that contains an opposite claim or statement and to express our disagreement. It connects two clauses where the second clause (which contains otherwise) express what would have happened if the action in a first sentence hadn't occurred. Therefore, the correct answer is however. We use however to introduce a statement that expresses contrast with the previous sentence.
