Đáp án:

• 3My friend said he could speak English well. (When reporting speech in the past, "can" changes to "could")

• 4This time next year, we will be studying abroad. (This describes an action that will be in progress at a specific time in the future)

• 5We should avoid using too much shorthand in formal online communication. (After the verb "avoid," we use the gerund form of the verb)

• 6Find ONE word that has the underlined part pronounced differently from the others: A. ghost (The "gh" is silent)

• 7When I woke up yesterday morning, someone had stolen my motorbike. (We use the past perfect tense to indicate an action that was completed before another action in the past)

• 8 Message board is an online discussion group in which you can leave messages or post questions.

• 9Thousands of buildings and houses were completely destroyed when the earthquake struck the city.

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