They did their utmost and made ____ progress in a short time.

A) inconsiderate C) careless

B) thoughtless D)neckless

A) aliens B) amateurs C) juniors D) editors

A) ensure B) promise C) guarantee D) assure

A) intricate C) indispensable

B) varied D) equable

A) difficulties in finding C) difficulty to find

B) difficulty in finding D) trouble to find

A) forward C) out

B) about D) to

A) cannot help to laugh C) cannot but laughing

B) cannot help laugh D) cannot help but laugh

A) many among C) many ones of which

B) many in which D) many of which

A) made C) having made

B) being made D) to be made

A) increasing B) increase C) to increaseD) have increased