Advanced [C1]
Modal verbs are used to express various meanings such as permission, obligation, and necessity. In addition, there are other related verbs that can be used for expressing these meanings such as had better, be able
![General English [Upper-Intermediate (B2)]](http://options.net.pl/wp-content/uploads/2023/10/general-english-upper-intermediate-b2-320x240-min.webp)
General English
This easy-to-use Upper-Intermediate (B2) level general English course ensures students make fast, measurable progress in learning English. This course is extremely well-organized with an integrated skills approach, focusing on practical vocabulary and developing communication skills.
![General English [Intermediate Plus (B1+)]](http://options.net.pl/wp-content/uploads/2023/10/general-english-intermediate-plus-b1-plus-320x240-min.webp)
General English
This easy-to-use Intermediate Plus (B1+) level general English course ensures students make fast, measurable progress in learning English. This course is extremely well-organized with an integrated skills approach, focusing on practical vocabulary and developing communication
Business English
English for Aviation has been developed specifically for people who work in the aviation industry and need to comply with the International Civil Aviation Organisation’s (ICAO’s) language proficiency requirements. It supports standard phraseology and builds
Grammar
If you have to do something, it is necessary for you to do it. It’s a law, an obligation or a fact. If you must do something, it is necessary for you to do it,
