شرکت در آزمون آنلاین انگلیسی 3 - درس دوم | آزمون شماره 414

The new series of English books written for high school students provide them with the language and ……… skills they need.

We didn't have enough information about your problem . If we ............................ , we......................... you .

.They are now ...............................  ways to produce the medicine in large quantities and cheaply

Karin: What are you painting? These are so colorful.

Sandra: I am working on a/an ……….. dictionary. I have to think what to draw for each word.

Microbes are ............................. to the human eye . But when they are magnified by a microscope, we can see them.