At least how many tests were carried out by the scientists referred to in this passage?

Visitors to the museum are requested not to touch any of the ____________.

They have lived in New York for ten years before they moved to Washington.

learn/play/piano / well/take/lot/practice

____________ the bad condition of the house, we didn't buy it.

She was surprised when an old friend turned up at the door.

We stayed at the Asia Hotel. Dr. Thanh recommended it to US.

newly-built wooden bridge/very useful/daily transportation

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

 Although there is not much to do in our village, but I prefer living here.

No houses in the street are as beautiful as this one.

Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

For long trips, flying is the fastest and safest to ____________ a far-off destination.

The University of Cambridge ____________ in 1209 and has served nearly 20,000 students of all cultures.

"Which dress are you wearing to the party tonight, Jane?"

"I'm sorry I haven't finished my project yet." - "____________"