30:17
STRUCTURE
2337 Views
01:56
READING COMPREHENSION &VOCABULARY
1278 Views
01:52
The Form of Irregular Verbs
1285 Views
01:59
The Tense of the Passive Voice
1367 Views
09:31
Changing from Active into Passive
1137 Views
07:20
The Form of the Passive Voice
1350 Views
03:29
What is the Passive Voice?
1390 Views
03:45
The Form of the Active Voice
1351 Views
05:33
THE PRESENT PERFECT & THE SIMPLE PAST
1709 Views
03:20
Since vs For
1488 Views
04:50
Have or Has
1305 Views
00:49
Key Words: Present Perfect
3064 Views
09:03
The Use of the Present Perfect
1294 Views
03:08
Meaning and Form
1337 Views
02:40
Writing Formal Letters
1332 Views
03:10
Language Use
1927 Views
09:35
Parallel Structure
1480 Views
04:35
Prepositions of Instruments and Means
1314 Views
03:27
Polite Requests
1384 Views
06:30
May as a Modal of Permission and Request
1364 Views
04:11
Can as a Modal of Permission and Request
1163 Views
02:50
عناصر الاداء
1318 Views
03:45
شركة ستيرن
891 Views
01:15
مقياس القيمة المضافة
1114 Views
02:58
مقياس الربحية
1082 Views
02:39
معايير دركر
1232 Views
03:51
مقايس الاداء
1256 Views
01:41
اتخاذ اجراءات تصحيحية
932 Views
01:52
المرحلة الثانية من الرقابة
945 Views
02:49
مراحل الرقابة
2241 Views