About How to use helping verbs in spoken English results of 10,000
08:29 12:31 03:39 01:08 01:45 07:30 14:50 04:02 08:46 13:24 04:46 10:03 08:09 03:07 12:14 14:39 04:08 73:54 04:24 03:18 08:21 17:19 14:14 04:11 03:37 09:40 05:15 17:55 03:03 03:10 13:09 04:19 03:20 07:29 06:33 08:32 11:04 06:32 18:25 13:26 08:44 05:04 14:38 09:13 03:21 11:09