8. To work _____ with the machine, you must read the instructions carefully.A.firstly B. naturally C. efficiently D. generally A: firstly B: naturally C: efficiently D: generally

Firstly,weshouldlogontothewebsitewhenshoppingonline.

It is probable that IoT will firstly be used in such industries as _________________.

If ______, the experiment will be successful. A: carefully doing B: B. it done carefully C: carefully done D: D. doing carefully

You should be more( ), you must write . A: careful; carefully B: carefully; careful C: careful; careful D: carefully; carefully

Uncle Sam is such a（__）driver that he always drives（__）. A: careful; careful B: carefully; careful C: careful; carefully D: carefully; carefully

--Does Betty write as ______ as Mary --No. Mary writes ______ than Betty. Mary writes ______ in our class. A: careful, more careful, the most careful B: carefully, more carefully, most carefully C: more carefully, carefully, most carefully

Who did firstly show the Periodic table?  (    )

The air-conditioner is running in the winter and to be stopped, we should（） A: close Fan and Humidifier at the same time B: firstly close Fan and then close humidifier immediately C: firstly close humidifier and then close Fan immediately D: firstly close humidifier and then close Fan after 30 second

He doesn’t write as _____ as Tom. A: careful B: more carefully C: carefully D: most carefully