Choose the best answer:
The person who does housework is ______.

The new computer system ________ when I went there the other day.

On July 20, 1969, Astronaut Neil Armstrong ____ down onto the moon, the first person ever to set foot on another celestial body.

Choose the best answer:
The doctor advised_______ late.

John paid $20 for his meal, ............  he had thought it would cost.

Find mistake: (In addition) to (serving) as (members) of the president’s cabinet, the attorney is the head of (the) Justice Department

That carcinogenic substances_______in many common household items is well-known.

The ceiling fans were on, but unfortunately they only____ the hot, humid air.

The salary of a computer programmer is .............. a teacher.

Urban consumers have formed co-operatives to provide themselves with necessities such groceries, Household appliances, and gasoline at a lower cost.

Choose the correct answer to complete the sentence. "Mai had ______ change her job."

I bought this grammar book  ..........  I could go over all the things we have studied this year.

I have just taken a Test of English as a Foreign Language or TOEFL _______ short.

Choose the best answer:
Mother warned_______ the electric plug.

Choose the correct answer. "Cultural differences can be seen in conversation ______ people from different countries."

It _______ that learning a foreign language _______ a lot of time.

By the end of this week, I_________here for ten days. 

Choose the best answer from the four options given (A, B, C, or D) to complete each sentence.

The challenges of maintaining quality control must be taken__________account before production can be increased.

We are trying our best to respond with timely ................and accuracy.

- Mai: “Oops! I’m sorry for stepping on your foot” - Hoa: “  .................  .”

.............. playing professional basketball, she also enjoys tennis.