One of the most difficult problems ______ whenever we try ...

[ Tenses ]

One of the most difficult problems ______ whenever we try to achieve goals.

A. arise

B. arises

C. is arisen

D. are arisen

Select your answer:
A B C D E

Other quiz:

Present Perfect Tense › View

There (has) been many earthquakes in California.

A. True
B. False

Parts of Speech and Compound Sentences › View

You can repeat the experiment “if” you have the equipment.

A. conjunction

B. adjective

C. pronoun

D. preposition

Grammar › View

Which verbs are future perfect tense

A. had

B. has, have

C. will have

Gerunds › View

Identify the gerund

Many of the laughing students love singing.

A. Many

B. laughing

C. love

D. singing