Not __________  does this spell disaster for aquatic ecosystems, the pollutants also seep through and reach the groundwater, which might end up in our households as contaminated water we use in our daily activities, including drinking.

Nobody knows what the _______of the explosion

__________ pollution is the increase of temperature caused by human activity.

Choose the best answer for each following sentences: 

“Hello. You must be Yoko.” – “ ______”

Choose the best answer to each question.

John ________from social activity because he felt embarrassed with people.

Choose the correct completion:

We will go without her unless she........(be) ready.

Tet is the holiday _______ celebrated in Lunar New Year

Mathew went to bed _______ it was too late to go out.

Do you know what is the cause __________ pollution?

Choose the best option to complete the sentence. 

She hasn't written to me ___________ we met last time.

Choose the best answer to each question. 

How can I know ________ book is yours?- They are so alike.

The girl was not pretty but she sang ______.

Choose A, B, C, or D to complete the sentences.

____as many ideas possible.

_______ she changed a lot, we didn’t recognize her.

Choose the correct answer from the four options marked A, B, C, or D to complete sentence: "The librarian asked us _______ so much noise."

 Its very nice _______ you to say so

Bill puts money in the bank, ________?

Choose the word or the phrase or sentence that best completes each unfinished sentence below or that best keeps the meaning of the original sentence if it is substituted for the underlined word or phrase.
He ________ to find a job but he had no luck.

I suggest ______ A shortcut through the park. It’ll take much less time

Choose the one underlined word/ phrase which is grammatically incorrect.

The environmentalist suggest (A)  planting (B) more trees to improve the city’s landscape (C) and the environment as well (D).

I ’d love to play volleyball _______ I have to complete an assignment.