30:17
STRUCTURE
2548 Views
01:56
READING COMPREHENSION &VOCABULARY
1444 Views
01:52
The Form of Irregular Verbs
1465 Views
01:59
The Tense of the Passive Voice
1571 Views
09:31
Changing from Active into Passive
1313 Views
07:20
The Form of the Passive Voice
1532 Views
03:29
What is the Passive Voice?
1564 Views
03:45
The Form of the Active Voice
1515 Views
05:33
THE PRESENT PERFECT & THE SIMPLE PAST
2019 Views
03:20
Since vs For
1659 Views
04:50
Have or Has
1476 Views
00:49
Key Words: Present Perfect
3376 Views
09:03
The Use of the Present Perfect
1482 Views
03:08
Meaning and Form
1536 Views
02:40
Writing Formal Letters
1519 Views
03:10
Language Use
2105 Views
09:35
Parallel Structure
1675 Views
04:35
Prepositions of Instruments and Means
1491 Views
03:27
Polite Requests
1583 Views
06:30
May as a Modal of Permission and Request
1607 Views
04:11
Can as a Modal of Permission and Request
1395 Views
02:50
عناصر الاداء
1430 Views
03:45
شركة ستيرن
999 Views
01:15
مقياس القيمة المضافة
1285 Views
02:58
مقياس الربحية
1178 Views
02:39
معايير دركر
1373 Views
03:51
مقايس الاداء
1346 Views
01:41
اتخاذ اجراءات تصحيحية
1044 Views
01:52
المرحلة الثانية من الرقابة
1119 Views
02:49
مراحل الرقابة
2472 Views