TOEFL SKILL 4

The professor does not understand .................... .

• why did many students do poorly on the exam

• so many students did poorly on the exam

• why so many students did poorly on the exam

• students did poorly on the exam

Only the pilot can tell you .................... .

• how far the plane can go on one tank of fuel.

• how far can the plane go on one tank of fuel.

• how can the plane go on one tank of fuel.

• how the plane go on one tank of fuel.

What type of security ...................... ?

• he prefer for his investments?

• do he prefer for his investments?

• he prefers for his investments?

• does he prefer for his investments?

Not even the bank president knows .............. .

• will be opened.

• the vault will be opened.

• when will the vault be opened.

• when the vault will be opened.

How long ........................ since you arrived in the United States?

• have it been

• has it been

• has been it

• have been it

The jury doubts ................. under cross-examination.

• what the witness said

• what did the witness said

• what did the witness say

• the witness said

Do you know .................... to take an extended leave of absence?

• why is he want

• why do he want

• why does he want

• why he wants

I wonder ....................... to do.

• is she going

• what she going

• what is she going

• what she is going

The director is not sure why ...................... .

• has the land developers changed their plans.

• the land developers have changed their plans.

• have the land developers changed their plans.

• have the land developer changed their plans.

When .................... you about the book?

• did the teacher tell

• the teacher tell

• the teacher told

• did the teacher told