4. We must that the experiments are controlled as rigidly as possible A) 5. Things are not all that bad. A fall into the pit, a gain in your At least you've learned D) 6. This book contains a(an) of words which are comparatively seldom used now A)altitude B)latitude C)multitude D)attitude 7. The family is of Italian C)breed D)resource 8. She her elbow on the point of a nail A)scratched B) snatch C)smashed D)scrawled4. We must____ that the experiments are controlled as rigidly as possible. A) ensure B) assure C) insure D) secure 5. Things are not all that bad. A fall into the pit, a gain in your____. At least you've learned something. A) ability B) power C) mind D) wit 6. This book contains a (an) ____of words which are comparatively seldom used now. A) altitude B) latitude C) multitude D) attitude 7. The family is of Italian____. A) source B) origin C) breed D) resource 8. She____ her elbow on the point of a nail. A) scratched B) snatched C) smashed D) scrawled