The answer is option D: adverb.
<em>Sometimes </em>is an adverb of frequency, which indicates how often something happens. Adverbs of frequency are usually used for repeated or periodic activities, so they often go with the present simple tense. Other examples of adverbs of frequency are: <em>always</em>, <em>usually</em>, <em>often </em>and <em>never</em>.
C. A heavy rainstorm.
The text shows indication of a storm arriving. “Clouds arrived” are an indicator that clouds quickly appeared. “Lightning flashed” tells us these are storm clouds. It makes sense that next it would start raining, making the next event a heavy rainstorm.
The answer is D because it states an hypothetical situation, as you explained above.
Answer:
it's when you motivate yourself negatively. Or just a punishisment based boosting method to make you stop doing a certain thing. (Smoking, drugs, etc.)
Within a week, the wood we left outside had begun to decay.