30:17
STRUCTURE
2411 Views
01:56
READING COMPREHENSION &VOCABULARY
1342 Views
01:52
The Form of Irregular Verbs
1356 Views
01:59
The Tense of the Passive Voice
1430 Views
09:31
Changing from Active into Passive
1208 Views
07:20
The Form of the Passive Voice
1414 Views
03:29
What is the Passive Voice?
1455 Views
03:45
The Form of the Active Voice
1409 Views
05:33
THE PRESENT PERFECT & THE SIMPLE PAST
1855 Views
03:20
Since vs For
1556 Views
04:50
Have or Has
1371 Views
00:49
Key Words: Present Perfect
3240 Views
09:03
The Use of the Present Perfect
1374 Views
03:08
Meaning and Form
1419 Views
02:40
Writing Formal Letters
1407 Views
03:10
Language Use
1996 Views
09:35
Parallel Structure
1566 Views
04:35
Prepositions of Instruments and Means
1377 Views
03:27
Polite Requests
1472 Views
06:30
May as a Modal of Permission and Request
1455 Views
04:11
Can as a Modal of Permission and Request
1266 Views
02:50
عناصر الاداء
1377 Views
03:45
شركة ستيرن
943 Views
01:15
مقياس القيمة المضافة
1230 Views
02:58
مقياس الربحية
1145 Views
02:39
معايير دركر
1304 Views
03:51
مقايس الاداء
1314 Views
01:41
اتخاذ اجراءات تصحيحية
1012 Views
01:52
المرحلة الثانية من الرقابة
989 Views
02:49
مراحل الرقابة
2341 Views